Home / 90,781.66-125,281.69-49,947.47

Finding the Fourth Proportional to 90,781.66, 125,281.69 and 49,947.47

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Solution

The fourth proportional to 90,781.66, 125,281.69 and 49,947.47 is: 68,929.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,781.66 : 125,281.69 = 49,947.47 : x
  2. Step 2: Convert to fraction form
    90,781.66/125,281.69 = 49,947.47/x
  3. Step 3: Cross multiply
    90,781.66x = 125,281.69 × 49,947.47
  4. Step 4: Simplify right side
    90,781.66x = 6,257,502,701.55
  5. Step 5: Solve for x
    x = 6,257,502,701.55/90,781.66
  6. Step 6: Final answer
    x = 68,929.15

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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.