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Finding the Fourth Proportional to 71,407.53, 106,472.89 and 69,445.77

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Solution

The fourth proportional to 71,407.53, 106,472.89 and 69,445.77 is: 103,547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,407.53 : 106,472.89 = 69,445.77 : x
  2. Step 2: Convert to fraction form
    71,407.53/106,472.89 = 69,445.77/x
  3. Step 3: Cross multiply
    71,407.53x = 106,472.89 × 69,445.77
  4. Step 4: Simplify right side
    71,407.53x = 7,394,091,830.18
  5. Step 5: Solve for x
    x = 7,394,091,830.18/71,407.53
  6. Step 6: Final answer
    x = 103,547.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.