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Finding the Fourth Proportional to 52,979.80, 79,429.20 and 26,703.40

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Solution

The fourth proportional to 52,979.80, 79,429.20 and 26,703.40 is: 40,034.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,979.80 : 79,429.20 = 26,703.40 : x
  2. Step 2: Convert to fraction form
    52,979.80/79,429.20 = 26,703.40/x
  3. Step 3: Cross multiply
    52,979.80x = 79,429.20 × 26,703.40
  4. Step 4: Simplify right side
    52,979.80x = 2,121,029,699.28
  5. Step 5: Solve for x
    x = 2,121,029,699.28/52,979.80
  6. Step 6: Final answer
    x = 40,034.69

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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.