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Finding the Fourth Proportional to 71,547.33, 98,730.37 and 39,713.72

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Solution

The fourth proportional to 71,547.33, 98,730.37 and 39,713.72 is: 54,802.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,547.33 : 98,730.37 = 39,713.72 : x
  2. Step 2: Convert to fraction form
    71,547.33/98,730.37 = 39,713.72/x
  3. Step 3: Cross multiply
    71,547.33x = 98,730.37 × 39,713.72
  4. Step 4: Simplify right side
    71,547.33x = 3,920,950,195.91
  5. Step 5: Solve for x
    x = 3,920,950,195.91/71,547.33
  6. Step 6: Final answer
    x = 54,802.19

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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.