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Finding the Fourth Proportional to 58,138.32, 80,255.26 and 39,300.96

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Solution

The fourth proportional to 58,138.32, 80,255.26 and 39,300.96 is: 54,251.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,138.32 : 80,255.26 = 39,300.96 : x
  2. Step 2: Convert to fraction form
    58,138.32/80,255.26 = 39,300.96/x
  3. Step 3: Cross multiply
    58,138.32x = 80,255.26 × 39,300.96
  4. Step 4: Simplify right side
    58,138.32x = 3,154,108,763.05
  5. Step 5: Solve for x
    x = 3,154,108,763.05/58,138.32
  6. Step 6: Final answer
    x = 54,251.80

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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.