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Finding the Fourth Proportional to 72,987.32, 109,480.98 and 41,800.76

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Solution

The fourth proportional to 72,987.32, 109,480.98 and 41,800.76 is: 62,701.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,987.32 : 109,480.98 = 41,800.76 : x
  2. Step 2: Convert to fraction form
    72,987.32/109,480.98 = 41,800.76/x
  3. Step 3: Cross multiply
    72,987.32x = 109,480.98 × 41,800.76
  4. Step 4: Simplify right side
    72,987.32x = 4,576,388,169.54
  5. Step 5: Solve for x
    x = 4,576,388,169.54/72,987.32
  6. Step 6: Final answer
    x = 62,701.14

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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.