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Finding the Fourth Proportional to 91,606.62, 126,478.95 and 57,203.91

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Solution

The fourth proportional to 91,606.62, 126,478.95 and 57,203.91 is: 78,980.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,606.62 : 126,478.95 = 57,203.91 : x
  2. Step 2: Convert to fraction form
    91,606.62/126,478.95 = 57,203.91/x
  3. Step 3: Cross multiply
    91,606.62x = 126,478.95 × 57,203.91
  4. Step 4: Simplify right side
    91,606.62x = 7,235,090,472.69
  5. Step 5: Solve for x
    x = 7,235,090,472.69/91,606.62
  6. Step 6: Final answer
    x = 78,980.00

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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.