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Finding the Fourth Proportional to 79,132.59, 109,210.40 and 47,300.81

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Solution

The fourth proportional to 79,132.59, 109,210.40 and 47,300.81 is: 65,279.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,132.59 : 109,210.40 = 47,300.81 : x
  2. Step 2: Convert to fraction form
    79,132.59/109,210.40 = 47,300.81/x
  3. Step 3: Cross multiply
    79,132.59x = 109,210.40 × 47,300.81
  4. Step 4: Simplify right side
    79,132.59x = 5,165,739,597.87
  5. Step 5: Solve for x
    x = 5,165,739,597.87/79,132.59
  6. Step 6: Final answer
    x = 65,279.55

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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.