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Finding the Fourth Proportional to 71,547.54, 98,740.08 and 39,716.97

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Solution

The fourth proportional to 71,547.54, 98,740.08 and 39,716.97 is: 54,811.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,547.54 : 98,740.08 = 39,716.97 : x
  2. Step 2: Convert to fraction form
    71,547.54/98,740.08 = 39,716.97/x
  3. Step 3: Cross multiply
    71,547.54x = 98,740.08 × 39,716.97
  4. Step 4: Simplify right side
    71,547.54x = 3,921,656,795.16
  5. Step 5: Solve for x
    x = 3,921,656,795.16/71,547.54
  6. Step 6: Final answer
    x = 54,811.90

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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.