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Finding the Fourth Proportional to 76,432.60, 114,422.10 and 56,798.20

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Solution

The fourth proportional to 76,432.60, 114,422.10 and 56,798.20 is: 85,028.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,432.60 : 114,422.10 = 56,798.20 : x
  2. Step 2: Convert to fraction form
    76,432.60/114,422.10 = 56,798.20/x
  3. Step 3: Cross multiply
    76,432.60x = 114,422.10 × 56,798.20
  4. Step 4: Simplify right side
    76,432.60x = 6,498,969,320.22
  5. Step 5: Solve for x
    x = 6,498,969,320.22/76,432.60
  6. Step 6: Final answer
    x = 85,028.76

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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.