Home / 72,130.16-108,101.52-29,385.72

Finding the Fourth Proportional to 72,130.16, 108,101.52 and 29,385.72

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Solution

The fourth proportional to 72,130.16, 108,101.52 and 29,385.72 is: 44,040.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,130.16 : 108,101.52 = 29,385.72 : x
  2. Step 2: Convert to fraction form
    72,130.16/108,101.52 = 29,385.72/x
  3. Step 3: Cross multiply
    72,130.16x = 108,101.52 × 29,385.72
  4. Step 4: Simplify right side
    72,130.16x = 3,176,640,998.29
  5. Step 5: Solve for x
    x = 3,176,640,998.29/72,130.16
  6. Step 6: Final answer
    x = 44,040.40

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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.