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Finding the Fourth Proportional to 87,875.40, 131,869.80 and 48,460.80

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Solution

The fourth proportional to 87,875.40, 131,869.80 and 48,460.80 is: 72,722.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,875.40 : 131,869.80 = 48,460.80 : x
  2. Step 2: Convert to fraction form
    87,875.40/131,869.80 = 48,460.80/x
  3. Step 3: Cross multiply
    87,875.40x = 131,869.80 × 48,460.80
  4. Step 4: Simplify right side
    87,875.40x = 6,390,516,003.84
  5. Step 5: Solve for x
    x = 6,390,516,003.84/87,875.40
  6. Step 6: Final answer
    x = 72,722.47

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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.