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Finding the Fourth Proportional to 83,655.20, 115,440.21 and 45,413.88

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Solution

The fourth proportional to 83,655.20, 115,440.21 and 45,413.88 is: 62,669.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,655.20 : 115,440.21 = 45,413.88 : x
  2. Step 2: Convert to fraction form
    83,655.20/115,440.21 = 45,413.88/x
  3. Step 3: Cross multiply
    83,655.20x = 115,440.21 × 45,413.88
  4. Step 4: Simplify right side
    83,655.20x = 5,242,587,844.11
  5. Step 5: Solve for x
    x = 5,242,587,844.11/83,655.20
  6. Step 6: Final answer
    x = 62,669.01

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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.