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Finding the Fourth Proportional to 79,215.80, 109,276.96 and 53,713.56

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Solution

The fourth proportional to 79,215.80, 109,276.96 and 53,713.56 is: 74,097.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,215.80 : 109,276.96 = 53,713.56 : x
  2. Step 2: Convert to fraction form
    79,215.80/109,276.96 = 53,713.56/x
  3. Step 3: Cross multiply
    79,215.80x = 109,276.96 × 53,713.56
  4. Step 4: Simplify right side
    79,215.80x = 5,869,654,547.58
  5. Step 5: Solve for x
    x = 5,869,654,547.58/79,215.80
  6. Step 6: Final answer
    x = 74,097.02

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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.