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Finding the Fourth Proportional to 87,101.40, 130,695.30 and 49,690.20

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Solution

The fourth proportional to 87,101.40, 130,695.30 and 49,690.20 is: 74,559.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,101.40 : 130,695.30 = 49,690.20 : x
  2. Step 2: Convert to fraction form
    87,101.40/130,695.30 = 49,690.20/x
  3. Step 3: Cross multiply
    87,101.40x = 130,695.30 × 49,690.20
  4. Step 4: Simplify right side
    87,101.40x = 6,494,275,596.06
  5. Step 5: Solve for x
    x = 6,494,275,596.06/87,101.40
  6. Step 6: Final answer
    x = 74,559.95

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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.