Home / 91,407.20-126,148.39-51,124.71

Finding the Fourth Proportional to 91,407.20, 126,148.39 and 51,124.71

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Solution

The fourth proportional to 91,407.20, 126,148.39 and 51,124.71 is: 70,555.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,407.20 : 126,148.39 = 51,124.71 : x
  2. Step 2: Convert to fraction form
    91,407.20/126,148.39 = 51,124.71/x
  3. Step 3: Cross multiply
    91,407.20x = 126,148.39 × 51,124.71
  4. Step 4: Simplify right side
    91,407.20x = 6,449,299,727.91
  5. Step 5: Solve for x
    x = 6,449,299,727.91/91,407.20
  6. Step 6: Final answer
    x = 70,555.71

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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.