Home / 91,438.56-126,178.02-51,149.16

Finding the Fourth Proportional to 91,438.56, 126,178.02 and 51,149.16

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Solution

The fourth proportional to 91,438.56, 126,178.02 and 51,149.16 is: 70,581.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,438.56 : 126,178.02 = 51,149.16 : x
  2. Step 2: Convert to fraction form
    91,438.56/126,178.02 = 51,149.16/x
  3. Step 3: Cross multiply
    91,438.56x = 126,178.02 × 51,149.16
  4. Step 4: Simplify right side
    91,438.56x = 6,453,899,733.46
  5. Step 5: Solve for x
    x = 6,453,899,733.46/91,438.56
  6. Step 6: Final answer
    x = 70,581.82

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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.