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Finding the Fourth Proportional to 79,132.35, 109,203.95 and 43,321.77

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Solution

The fourth proportional to 79,132.35, 109,203.95 and 43,321.77 is: 59,784.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,132.35 : 109,203.95 = 43,321.77 : x
  2. Step 2: Convert to fraction form
    79,132.35/109,203.95 = 43,321.77/x
  3. Step 3: Cross multiply
    79,132.35x = 109,203.95 × 43,321.77
  4. Step 4: Simplify right side
    79,132.35x = 4,730,908,188.38
  5. Step 5: Solve for x
    x = 4,730,908,188.38/79,132.35
  6. Step 6: Final answer
    x = 59,784.76

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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.