Home / 91,965.78-126,909.18-56,215.62

Finding the Fourth Proportional to 91,965.78, 126,909.18 and 56,215.62

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Solution

The fourth proportional to 91,965.78, 126,909.18 and 56,215.62 is: 77,575.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,965.78 : 126,909.18 = 56,215.62 : x
  2. Step 2: Convert to fraction form
    91,965.78/126,909.18 = 56,215.62/x
  3. Step 3: Cross multiply
    91,965.78x = 126,909.18 × 56,215.62
  4. Step 4: Simplify right side
    91,965.78x = 7,134,278,237.39
  5. Step 5: Solve for x
    x = 7,134,278,237.39/91,965.78
  6. Step 6: Final answer
    x = 77,575.36

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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.