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Finding the Fourth Proportional to 87,585.84, 120,868.80 and 49,345.80

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Solution

The fourth proportional to 87,585.84, 120,868.80 and 49,345.80 is: 68,097.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,585.84 : 120,868.80 = 49,345.80 : x
  2. Step 2: Convert to fraction form
    87,585.84/120,868.80 = 49,345.80/x
  3. Step 3: Cross multiply
    87,585.84x = 120,868.80 × 49,345.80
  4. Step 4: Simplify right side
    87,585.84x = 5,964,367,631.04
  5. Step 5: Solve for x
    x = 5,964,367,631.04/87,585.84
  6. Step 6: Final answer
    x = 68,097.40

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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.