Home / 81,359.09-121,572.18-62,017.85

Finding the Fourth Proportional to 81,359.09, 121,572.18 and 62,017.85

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Solution

The fourth proportional to 81,359.09, 121,572.18 and 62,017.85 is: 92,671.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,359.09 : 121,572.18 = 62,017.85 : x
  2. Step 2: Convert to fraction form
    81,359.09/121,572.18 = 62,017.85/x
  3. Step 3: Cross multiply
    81,359.09x = 121,572.18 × 62,017.85
  4. Step 4: Simplify right side
    81,359.09x = 7,539,644,913.32
  5. Step 5: Solve for x
    x = 7,539,644,913.32/81,359.09
  6. Step 6: Final answer
    x = 92,671.21

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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.