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Finding the Fourth Proportional to 101,410.24, 139,941.66 and 58,387.90

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Solution

The fourth proportional to 101,410.24, 139,941.66 and 58,387.90 is: 80,572.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,410.24 : 139,941.66 = 58,387.90 : x
  2. Step 2: Convert to fraction form
    101,410.24/139,941.66 = 58,387.90/x
  3. Step 3: Cross multiply
    101,410.24x = 139,941.66 × 58,387.90
  4. Step 4: Simplify right side
    101,410.24x = 8,170,899,649.91
  5. Step 5: Solve for x
    x = 8,170,899,649.91/101,410.24
  6. Step 6: Final answer
    x = 80,572.73

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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.