Home / 87,693.30-120,988.07-53,666.31

Finding the Fourth Proportional to 87,693.30, 120,988.07 and 53,666.31

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Solution

The fourth proportional to 87,693.30, 120,988.07 and 53,666.31 is: 74,041.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,693.30 : 120,988.07 = 53,666.31 : x
  2. Step 2: Convert to fraction form
    87,693.30/120,988.07 = 53,666.31/x
  3. Step 3: Cross multiply
    87,693.30x = 120,988.07 × 53,666.31
  4. Step 4: Simplify right side
    87,693.30x = 6,492,983,002.59
  5. Step 5: Solve for x
    x = 6,492,983,002.59/87,693.30
  6. Step 6: Final answer
    x = 74,041.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.