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Finding the Fourth Proportional to 88,659.80, 132,989.70 and 42,003.80

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Solution

The fourth proportional to 88,659.80, 132,989.70 and 42,003.80 is: 63,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,659.80 : 132,989.70 = 42,003.80 : x
  2. Step 2: Convert to fraction form
    88,659.80/132,989.70 = 42,003.80/x
  3. Step 3: Cross multiply
    88,659.80x = 132,989.70 × 42,003.80
  4. Step 4: Simplify right side
    88,659.80x = 5,586,072,760.86
  5. Step 5: Solve for x
    x = 5,586,072,760.86/88,659.80
  6. Step 6: Final answer
    x = 63,005.70

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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.