Home / 87,931.59-121,347.85-53,958.85

Finding the Fourth Proportional to 87,931.59, 121,347.85 and 53,958.85

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Solution

The fourth proportional to 87,931.59, 121,347.85 and 53,958.85 is: 74,464.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,931.59 : 121,347.85 = 53,958.85 : x
  2. Step 2: Convert to fraction form
    87,931.59/121,347.85 = 53,958.85/x
  3. Step 3: Cross multiply
    87,931.59x = 121,347.85 × 53,958.85
  4. Step 4: Simplify right side
    87,931.59x = 6,547,790,435.97
  5. Step 5: Solve for x
    x = 6,547,790,435.97/87,931.59
  6. Step 6: Final answer
    x = 74,464.60

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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.