Home / 91,417.76-126,156.78-51,132.20

Finding the Fourth Proportional to 91,417.76, 126,156.78 and 51,132.20

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Solution

The fourth proportional to 91,417.76, 126,156.78 and 51,132.20 is: 70,562.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,417.76 : 126,156.78 = 51,132.20 : x
  2. Step 2: Convert to fraction form
    91,417.76/126,156.78 = 51,132.20/x
  3. Step 3: Cross multiply
    91,417.76x = 126,156.78 × 51,132.20
  4. Step 4: Simplify right side
    91,417.76x = 6,450,673,706.32
  5. Step 5: Solve for x
    x = 6,450,673,706.32/91,417.76
  6. Step 6: Final answer
    x = 70,562.59

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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.