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Finding the Fourth Proportional to 54,306,047.80, 81,459,071.70 and 20,220,340.60

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Solution

The fourth proportional to 54,306,047.80, 81,459,071.70 and 20,220,340.60 is: 30,330,510.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,306,047.80 : 81,459,071.70 = 20,220,340.60 : x
  2. Step 2: Convert to fraction form
    54,306,047.80/81,459,071.70 = 20,220,340.60/x
  3. Step 3: Cross multiply
    54,306,047.80x = 81,459,071.70 × 20,220,340.60
  4. Step 4: Simplify right side
    54,306,047.80x = 1,647,130,174,733,821.25
  5. Step 5: Solve for x
    x = 1,647,130,174,733,821.25/54,306,047.80
  6. Step 6: Final answer
    x = 30,330,510.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.