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Finding the Fourth Proportional to 87,510.88, 120,779.59 and 66,253.24

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Solution

The fourth proportional to 87,510.88, 120,779.59 and 66,253.24 is: 91,440.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,510.88 : 120,779.59 = 66,253.24 : x
  2. Step 2: Convert to fraction form
    87,510.88/120,779.59 = 66,253.24/x
  3. Step 3: Cross multiply
    87,510.88x = 120,779.59 × 66,253.24
  4. Step 4: Simplify right side
    87,510.88x = 8,002,038,559.47
  5. Step 5: Solve for x
    x = 8,002,038,559.47/87,510.88
  6. Step 6: Final answer
    x = 91,440.50

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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.