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Finding the Fourth Proportional to 79,439.93, 119,159.77 and 20,275.59

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Solution

The fourth proportional to 79,439.93, 119,159.77 and 20,275.59 is: 30,413.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,439.93 : 119,159.77 = 20,275.59 : x
  2. Step 2: Convert to fraction form
    79,439.93/119,159.77 = 20,275.59/x
  3. Step 3: Cross multiply
    79,439.93x = 119,159.77 × 20,275.59
  4. Step 4: Simplify right side
    79,439.93x = 2,416,034,641.01
  5. Step 5: Solve for x
    x = 2,416,034,641.01/79,439.93
  6. Step 6: Final answer
    x = 30,413.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.