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Finding the Fourth Proportional to 58,408.38, 80,639.28 and 38,009.88

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Solution

The fourth proportional to 58,408.38, 80,639.28 and 38,009.88 is: 52,476.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,408.38 : 80,639.28 = 38,009.88 : x
  2. Step 2: Convert to fraction form
    58,408.38/80,639.28 = 38,009.88/x
  3. Step 3: Cross multiply
    58,408.38x = 80,639.28 × 38,009.88
  4. Step 4: Simplify right side
    58,408.38x = 3,065,089,356.09
  5. Step 5: Solve for x
    x = 3,065,089,356.09/58,408.38
  6. Step 6: Final answer
    x = 52,476.88

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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.