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Finding the Fourth Proportional to 58,138.29, 80,239.61 and 35,490.46

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Solution

The fourth proportional to 58,138.29, 80,239.61 and 35,490.46 is: 48,982.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,138.29 : 80,239.61 = 35,490.46 : x
  2. Step 2: Convert to fraction form
    58,138.29/80,239.61 = 35,490.46/x
  3. Step 3: Cross multiply
    58,138.29x = 80,239.61 × 35,490.46
  4. Step 4: Simplify right side
    58,138.29x = 2,847,740,669.12
  5. Step 5: Solve for x
    x = 2,847,740,669.12/58,138.29
  6. Step 6: Final answer
    x = 48,982.19

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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.