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Finding the Fourth Proportional to 96,752.80, 145,129.20 and 56,730.70

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Solution

The fourth proportional to 96,752.80, 145,129.20 and 56,730.70 is: 85,096.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,752.80 : 145,129.20 = 56,730.70 : x
  2. Step 2: Convert to fraction form
    96,752.80/145,129.20 = 56,730.70/x
  3. Step 3: Cross multiply
    96,752.80x = 145,129.20 × 56,730.70
  4. Step 4: Simplify right side
    96,752.80x = 8,233,281,106.44
  5. Step 5: Solve for x
    x = 8,233,281,106.44/96,752.80
  6. Step 6: Final answer
    x = 85,096.05

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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.