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Finding the Fourth Proportional to 71,244.36, 98,312.33 and 39,414.40

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Solution

The fourth proportional to 71,244.36, 98,312.33 and 39,414.40 is: 54,389.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,244.36 : 98,312.33 = 39,414.40 : x
  2. Step 2: Convert to fraction form
    71,244.36/98,312.33 = 39,414.40/x
  3. Step 3: Cross multiply
    71,244.36x = 98,312.33 × 39,414.40
  4. Step 4: Simplify right side
    71,244.36x = 3,874,921,352.31
  5. Step 5: Solve for x
    x = 3,874,921,352.31/71,244.36
  6. Step 6: Final answer
    x = 54,389.17

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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.