Home / 87,510.24-120,763.08-49,784.40

Finding the Fourth Proportional to 87,510.24, 120,763.08 and 49,784.40

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Solution

The fourth proportional to 87,510.24, 120,763.08 and 49,784.40 is: 68,701.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,510.24 : 120,763.08 = 49,784.40 : x
  2. Step 2: Convert to fraction form
    87,510.24/120,763.08 = 49,784.40/x
  3. Step 3: Cross multiply
    87,510.24x = 120,763.08 × 49,784.40
  4. Step 4: Simplify right side
    87,510.24x = 6,012,117,479.95
  5. Step 5: Solve for x
    x = 6,012,117,479.95/87,510.24
  6. Step 6: Final answer
    x = 68,701.87

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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.