Home / 91,431.61-126,120.45-60,387.05

Finding the Fourth Proportional to 91,431.61, 126,120.45 and 60,387.05

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Solution

The fourth proportional to 91,431.61, 126,120.45 and 60,387.05 is: 83,297.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,431.61 : 126,120.45 = 60,387.05 : x
  2. Step 2: Convert to fraction form
    91,431.61/126,120.45 = 60,387.05/x
  3. Step 3: Cross multiply
    91,431.61x = 126,120.45 × 60,387.05
  4. Step 4: Simplify right side
    91,431.61x = 7,616,041,920.17
  5. Step 5: Solve for x
    x = 7,616,041,920.17/91,431.61
  6. Step 6: Final answer
    x = 83,297.69

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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.