Home / 87,815.14-121,155.01-49,570.18

Finding the Fourth Proportional to 87,815.14, 121,155.01 and 49,570.18

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Solution

The fourth proportional to 87,815.14, 121,155.01 and 49,570.18 is: 68,389.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,815.14 : 121,155.01 = 49,570.18 : x
  2. Step 2: Convert to fraction form
    87,815.14/121,155.01 = 49,570.18/x
  3. Step 3: Cross multiply
    87,815.14x = 121,155.01 × 49,570.18
  4. Step 4: Simplify right side
    87,815.14x = 6,005,675,226.79
  5. Step 5: Solve for x
    x = 6,005,675,226.79/87,815.14
  6. Step 6: Final answer
    x = 68,389.98

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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.