Home / 91,971.15-126,920.64-53,732.89

Finding the Fourth Proportional to 91,971.15, 126,920.64 and 53,732.89

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Solution

The fourth proportional to 91,971.15, 126,920.64 and 53,732.89 is: 74,151.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,971.15 : 126,920.64 = 53,732.89 : x
  2. Step 2: Convert to fraction form
    91,971.15/126,920.64 = 53,732.89/x
  3. Step 3: Cross multiply
    91,971.15x = 126,920.64 × 53,732.89
  4. Step 4: Simplify right side
    91,971.15x = 6,819,812,787.85
  5. Step 5: Solve for x
    x = 6,819,812,787.85/91,971.15
  6. Step 6: Final answer
    x = 74,151.65

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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.