Home / 91,711.92-126,558-51,430.08

Finding the Fourth Proportional to 91,711.92, 126,558 and 51,430.08

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Solution

The fourth proportional to 91,711.92, 126,558 and 51,430.08 is: 70,971.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,711.92 : 126,558 = 51,430.08 : x
  2. Step 2: Convert to fraction form
    91,711.92/126,558 = 51,430.08/x
  3. Step 3: Cross multiply
    91,711.92x = 126,558 × 51,430.08
  4. Step 4: Simplify right side
    91,711.92x = 6,508,888,064.64
  5. Step 5: Solve for x
    x = 6,508,888,064.64/91,711.92
  6. Step 6: Final answer
    x = 70,971.02

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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.