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Finding the Fourth Proportional to 54,740.40, 82,110.60 and 39,868.80

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Solution

The fourth proportional to 54,740.40, 82,110.60 and 39,868.80 is: 59,803.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,740.40 : 82,110.60 = 39,868.80 : x
  2. Step 2: Convert to fraction form
    54,740.40/82,110.60 = 39,868.80/x
  3. Step 3: Cross multiply
    54,740.40x = 82,110.60 × 39,868.80
  4. Step 4: Simplify right side
    54,740.40x = 3,273,651,089.28
  5. Step 5: Solve for x
    x = 3,273,651,089.28/54,740.40
  6. Step 6: Final answer
    x = 59,803.20

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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.