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Finding the Fourth Proportional to 79,655.80, 109,922.88 and 43,358

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Solution

The fourth proportional to 79,655.80, 109,922.88 and 43,358 is: 59,832.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,655.80 : 109,922.88 = 43,358 : x
  2. Step 2: Convert to fraction form
    79,655.80/109,922.88 = 43,358/x
  3. Step 3: Cross multiply
    79,655.80x = 109,922.88 × 43,358
  4. Step 4: Simplify right side
    79,655.80x = 4,766,036,231.04
  5. Step 5: Solve for x
    x = 4,766,036,231.04/79,655.80
  6. Step 6: Final answer
    x = 59,832.88

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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.