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Finding the Fourth Proportional to 99,475.50, 137,276.46 and 54,763.50

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Solution

The fourth proportional to 99,475.50, 137,276.46 and 54,763.50 is: 75,573.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,475.50 : 137,276.46 = 54,763.50 : x
  2. Step 2: Convert to fraction form
    99,475.50/137,276.46 = 54,763.50/x
  3. Step 3: Cross multiply
    99,475.50x = 137,276.46 × 54,763.50
  4. Step 4: Simplify right side
    99,475.50x = 7,517,739,417.21
  5. Step 5: Solve for x
    x = 7,517,739,417.21/99,475.50
  6. Step 6: Final answer
    x = 75,573.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.