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Finding the Fourth Proportional to 71,385.30, 107,045.55 and 26,997.30

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Solution

The fourth proportional to 71,385.30, 107,045.55 and 26,997.30 is: 40,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,385.30 : 107,045.55 = 26,997.30 : x
  2. Step 2: Convert to fraction form
    71,385.30/107,045.55 = 26,997.30/x
  3. Step 3: Cross multiply
    71,385.30x = 107,045.55 × 26,997.30
  4. Step 4: Simplify right side
    71,385.30x = 2,889,940,827.02
  5. Step 5: Solve for x
    x = 2,889,940,827.02/71,385.30
  6. Step 6: Final answer
    x = 40,483.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.