Home / 90,780.91-125,280.65-49,946.72

Finding the Fourth Proportional to 90,780.91, 125,280.65 and 49,946.72

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Solution

The fourth proportional to 90,780.91, 125,280.65 and 49,946.72 is: 68,928.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,780.91 : 125,280.65 = 49,946.72 : x
  2. Step 2: Convert to fraction form
    90,780.91/125,280.65 = 49,946.72/x
  3. Step 3: Cross multiply
    90,780.91x = 125,280.65 × 49,946.72
  4. Step 4: Simplify right side
    90,780.91x = 6,257,357,045.43
  5. Step 5: Solve for x
    x = 6,257,357,045.43/90,780.91
  6. Step 6: Final answer
    x = 68,928.12

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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.