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Finding the Fourth Proportional to 101,032.74, 139,426.11 and 55,712.52

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Solution

The fourth proportional to 101,032.74, 139,426.11 and 55,712.52 is: 76,883.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,032.74 : 139,426.11 = 55,712.52 : x
  2. Step 2: Convert to fraction form
    101,032.74/139,426.11 = 55,712.52/x
  3. Step 3: Cross multiply
    101,032.74x = 139,426.11 × 55,712.52
  4. Step 4: Simplify right side
    101,032.74x = 7,767,779,941.90
  5. Step 5: Solve for x
    x = 7,767,779,941.90/101,032.74
  6. Step 6: Final answer
    x = 76,883.79

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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.