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Finding the Fourth Proportional to 52,089.80, 71,879.65 and 29,430.75

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Solution

The fourth proportional to 52,089.80, 71,879.65 and 29,430.75 is: 40,612.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,089.80 : 71,879.65 = 29,430.75 : x
  2. Step 2: Convert to fraction form
    52,089.80/71,879.65 = 29,430.75/x
  3. Step 3: Cross multiply
    52,089.80x = 71,879.65 × 29,430.75
  4. Step 4: Simplify right side
    52,089.80x = 2,115,471,935.66
  5. Step 5: Solve for x
    x = 2,115,471,935.66/52,089.80
  6. Step 6: Final answer
    x = 40,612.02

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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.