Home / 91,409.34-126,143.55-51,122.76

Finding the Fourth Proportional to 91,409.34, 126,143.55 and 51,122.76

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Solution

The fourth proportional to 91,409.34, 126,143.55 and 51,122.76 is: 70,548.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,409.34 : 126,143.55 = 51,122.76 : x
  2. Step 2: Convert to fraction form
    91,409.34/126,143.55 = 51,122.76/x
  3. Step 3: Cross multiply
    91,409.34x = 126,143.55 × 51,122.76
  4. Step 4: Simplify right side
    91,409.34x = 6,448,806,432.20
  5. Step 5: Solve for x
    x = 6,448,806,432.20/91,409.34
  6. Step 6: Final answer
    x = 70,548.66

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Half scale
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Double scale
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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.