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Finding the Fourth Proportional to 71,397.36, 98,528.94 and 39,566.79

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Solution

The fourth proportional to 71,397.36, 98,528.94 and 39,566.79 is: 54,602.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,397.36 : 98,528.94 = 39,566.79 : x
  2. Step 2: Convert to fraction form
    71,397.36/98,528.94 = 39,566.79/x
  3. Step 3: Cross multiply
    71,397.36x = 98,528.94 × 39,566.79
  4. Step 4: Simplify right side
    71,397.36x = 3,898,473,877.90
  5. Step 5: Solve for x
    x = 3,898,473,877.90/71,397.36
  6. Step 6: Final answer
    x = 54,602.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.