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Finding the Fourth Proportional to 38,703.78, 58,081.56 and 14,079.78

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Solution

The fourth proportional to 38,703.78, 58,081.56 and 14,079.78 is: 21,129.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,703.78 : 58,081.56 = 14,079.78 : x
  2. Step 2: Convert to fraction form
    38,703.78/58,081.56 = 14,079.78/x
  3. Step 3: Cross multiply
    38,703.78x = 58,081.56 × 14,079.78
  4. Step 4: Simplify right side
    38,703.78x = 817,775,586.86
  5. Step 5: Solve for x
    x = 817,775,586.86/38,703.78
  6. Step 6: Final answer
    x = 21,129.09

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1.5x scale

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.