Home / 91,947.72-126,880-51,658.32

Finding the Fourth Proportional to 91,947.72, 126,880 and 51,658.32

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Solution

The fourth proportional to 91,947.72, 126,880 and 51,658.32 is: 71,284.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,947.72 : 126,880 = 51,658.32 : x
  2. Step 2: Convert to fraction form
    91,947.72/126,880 = 51,658.32/x
  3. Step 3: Cross multiply
    91,947.72x = 126,880 × 51,658.32
  4. Step 4: Simplify right side
    91,947.72x = 6,554,407,641.60
  5. Step 5: Solve for x
    x = 6,554,407,641.60/91,947.72
  6. Step 6: Final answer
    x = 71,284.07

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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.