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Finding the Fourth Proportional to 91,373.29, 126,110.70 and 53,155

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Solution

The fourth proportional to 91,373.29, 126,110.70 and 53,155 is: 73,362.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,373.29 : 126,110.70 = 53,155 : x
  2. Step 2: Convert to fraction form
    91,373.29/126,110.70 = 53,155/x
  3. Step 3: Cross multiply
    91,373.29x = 126,110.70 × 53,155
  4. Step 4: Simplify right side
    91,373.29x = 6,703,414,258.50
  5. Step 5: Solve for x
    x = 6,703,414,258.50/91,373.29
  6. Step 6: Final answer
    x = 73,362.95

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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.