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Finding the Fourth Proportional to 72,187.59, 108,281.42 and 38,923.32

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Solution

The fourth proportional to 72,187.59, 108,281.42 and 38,923.32 is: 58,385.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,187.59 : 108,281.42 = 38,923.32 : x
  2. Step 2: Convert to fraction form
    72,187.59/108,281.42 = 38,923.32/x
  3. Step 3: Cross multiply
    72,187.59x = 108,281.42 × 38,923.32
  4. Step 4: Simplify right side
    72,187.59x = 4,214,672,360.71
  5. Step 5: Solve for x
    x = 4,214,672,360.71/72,187.59
  6. Step 6: Final answer
    x = 58,385.00

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1.5x scale

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.