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Finding the Fourth Proportional to 91,659.93, 126,454.14 and 53,413.76

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Solution

The fourth proportional to 91,659.93, 126,454.14 and 53,413.76 is: 73,689.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,659.93 : 126,454.14 = 53,413.76 : x
  2. Step 2: Convert to fraction form
    91,659.93/126,454.14 = 53,413.76/x
  3. Step 3: Cross multiply
    91,659.93x = 126,454.14 × 53,413.76
  4. Step 4: Simplify right side
    91,659.93x = 6,754,390,452.70
  5. Step 5: Solve for x
    x = 6,754,390,452.70/91,659.93
  6. Step 6: Final answer
    x = 73,689.68

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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.