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Finding the Fourth Proportional to 87,425.90, 130,917.41 and 54,210.84

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Solution

The fourth proportional to 87,425.90, 130,917.41 and 54,210.84 is: 81,178.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,425.90 : 130,917.41 = 54,210.84 : x
  2. Step 2: Convert to fraction form
    87,425.90/130,917.41 = 54,210.84/x
  3. Step 3: Cross multiply
    87,425.90x = 130,917.41 × 54,210.84
  4. Step 4: Simplify right side
    87,425.90x = 7,097,142,495.67
  5. Step 5: Solve for x
    x = 7,097,142,495.67/87,425.90
  6. Step 6: Final answer
    x = 81,178.95

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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.