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Finding the Fourth Proportional to 105,040.35, 157,486.72 and 38,471.83

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Solution

The fourth proportional to 105,040.35, 157,486.72 and 38,471.83 is: 57,680.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,040.35 : 157,486.72 = 38,471.83 : x
  2. Step 2: Convert to fraction form
    105,040.35/157,486.72 = 38,471.83/x
  3. Step 3: Cross multiply
    105,040.35x = 157,486.72 × 38,471.83
  4. Step 4: Simplify right side
    105,040.35x = 6,058,802,126.74
  5. Step 5: Solve for x
    x = 6,058,802,126.74/105,040.35
  6. Step 6: Final answer
    x = 57,680.71

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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.