Home / 91,399.39-126,132.80-51,114.85

Finding the Fourth Proportional to 91,399.39, 126,132.80 and 51,114.85

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Solution

The fourth proportional to 91,399.39, 126,132.80 and 51,114.85 is: 70,539.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,399.39 : 126,132.80 = 51,114.85 : x
  2. Step 2: Convert to fraction form
    91,399.39/126,132.80 = 51,114.85/x
  3. Step 3: Cross multiply
    91,399.39x = 126,132.80 × 51,114.85
  4. Step 4: Simplify right side
    91,399.39x = 6,447,258,581.17
  5. Step 5: Solve for x
    x = 6,447,258,581.17/91,399.39
  6. Step 6: Final answer
    x = 70,539.41

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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.