Home / 87,885.15-121,278.92-49,646.49

Finding the Fourth Proportional to 87,885.15, 121,278.92 and 49,646.49

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Solution

The fourth proportional to 87,885.15, 121,278.92 and 49,646.49 is: 68,510.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,885.15 : 121,278.92 = 49,646.49 : x
  2. Step 2: Convert to fraction form
    87,885.15/121,278.92 = 49,646.49/x
  3. Step 3: Cross multiply
    87,885.15x = 121,278.92 × 49,646.49
  4. Step 4: Simplify right side
    87,885.15x = 6,021,072,440.76
  5. Step 5: Solve for x
    x = 6,021,072,440.76/87,885.15
  6. Step 6: Final answer
    x = 68,510.69

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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.