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Finding the Fourth Proportional to 88,780.80, 133,171.20 and 47,308.80

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Solution

The fourth proportional to 88,780.80, 133,171.20 and 47,308.80 is: 70,963.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,780.80 : 133,171.20 = 47,308.80 : x
  2. Step 2: Convert to fraction form
    88,780.80/133,171.20 = 47,308.80/x
  3. Step 3: Cross multiply
    88,780.80x = 133,171.20 × 47,308.80
  4. Step 4: Simplify right side
    88,780.80x = 6,300,169,666.56
  5. Step 5: Solve for x
    x = 6,300,169,666.56/88,780.80
  6. Step 6: Final answer
    x = 70,963.20

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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.