Home / 87,690.11-120,984.76-53,663.12

Finding the Fourth Proportional to 87,690.11, 120,984.76 and 53,663.12

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Solution

The fourth proportional to 87,690.11, 120,984.76 and 53,663.12 is: 74,038.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,690.11 : 120,984.76 = 53,663.12 : x
  2. Step 2: Convert to fraction form
    87,690.11/120,984.76 = 53,663.12/x
  3. Step 3: Cross multiply
    87,690.11x = 120,984.76 × 53,663.12
  4. Step 4: Simplify right side
    87,690.11x = 6,492,419,862.36
  5. Step 5: Solve for x
    x = 6,492,419,862.36/87,690.11
  6. Step 6: Final answer
    x = 74,038.22

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1.5x scale

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.