Home / 87,425.40-130,916.65-54,210.34

Finding the Fourth Proportional to 87,425.40, 130,916.65 and 54,210.34

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Solution

The fourth proportional to 87,425.40, 130,916.65 and 54,210.34 is: 81,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,425.40 : 130,916.65 = 54,210.34 : x
  2. Step 2: Convert to fraction form
    87,425.40/130,916.65 = 54,210.34/x
  3. Step 3: Cross multiply
    87,425.40x = 130,916.65 × 54,210.34
  4. Step 4: Simplify right side
    87,425.40x = 7,097,036,108.16
  5. Step 5: Solve for x
    x = 7,097,036,108.16/87,425.40
  6. Step 6: Final answer
    x = 81,178.19

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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.