Home / 72,318.83-99,788.10-45,442.31

Finding the Fourth Proportional to 72,318.83, 99,788.10 and 45,442.31

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Solution

The fourth proportional to 72,318.83, 99,788.10 and 45,442.31 is: 62,702.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,318.83 : 99,788.10 = 45,442.31 : x
  2. Step 2: Convert to fraction form
    72,318.83/99,788.10 = 45,442.31/x
  3. Step 3: Cross multiply
    72,318.83x = 99,788.10 × 45,442.31
  4. Step 4: Simplify right side
    72,318.83x = 4,534,601,275.57
  5. Step 5: Solve for x
    x = 4,534,601,275.57/72,318.83
  6. Step 6: Final answer
    x = 62,702.92

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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.