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Finding the Fourth Proportional to 91,639.96, 126,462.94 and 55,829.94

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Solution

The fourth proportional to 91,639.96, 126,462.94 and 55,829.94 is: 77,045.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,639.96 : 126,462.94 = 55,829.94 : x
  2. Step 2: Convert to fraction form
    91,639.96/126,462.94 = 55,829.94/x
  3. Step 3: Cross multiply
    91,639.96x = 126,462.94 × 55,829.94
  4. Step 4: Simplify right side
    91,639.96x = 7,060,418,352.42
  5. Step 5: Solve for x
    x = 7,060,418,352.42/91,639.96
  6. Step 6: Final answer
    x = 77,045.19

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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.