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Finding the Fourth Proportional to 100,587.48, 150,913.98 and 47,990.16

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Solution

The fourth proportional to 100,587.48, 150,913.98 and 47,990.16 is: 72,000.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,587.48 : 150,913.98 = 47,990.16 : x
  2. Step 2: Convert to fraction form
    100,587.48/150,913.98 = 47,990.16/x
  3. Step 3: Cross multiply
    100,587.48x = 150,913.98 × 47,990.16
  4. Step 4: Simplify right side
    100,587.48x = 7,242,386,046.44
  5. Step 5: Solve for x
    x = 7,242,386,046.44/100,587.48
  6. Step 6: Final answer
    x = 72,000.87

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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.