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Finding the Fourth Proportional to 82,842.40, 124,004.40 and 65,216.80

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Solution

The fourth proportional to 82,842.40, 124,004.40 and 65,216.80 is: 97,621.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,842.40 : 124,004.40 = 65,216.80 : x
  2. Step 2: Convert to fraction form
    82,842.40/124,004.40 = 65,216.80/x
  3. Step 3: Cross multiply
    82,842.40x = 124,004.40 × 65,216.80
  4. Step 4: Simplify right side
    82,842.40x = 8,087,170,153.92
  5. Step 5: Solve for x
    x = 8,087,170,153.92/82,842.40
  6. Step 6: Final answer
    x = 97,621.15

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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.