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Finding the Fourth Proportional to 91,577.80, 126,373.62 and 51,290.92

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Solution

The fourth proportional to 91,577.80, 126,373.62 and 51,290.92 is: 70,779.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,577.80 : 126,373.62 = 51,290.92 : x
  2. Step 2: Convert to fraction form
    91,577.80/126,373.62 = 51,290.92/x
  3. Step 3: Cross multiply
    91,577.80x = 126,373.62 × 51,290.92
  4. Step 4: Simplify right side
    91,577.80x = 6,481,819,233.53
  5. Step 5: Solve for x
    x = 6,481,819,233.53/91,577.80
  6. Step 6: Final answer
    x = 70,779.37

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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.