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Finding the Fourth Proportional to 61,048.12, 91,408.12 and 38,740.72

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Solution

The fourth proportional to 61,048.12, 91,408.12 and 38,740.72 is: 58,006.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,048.12 : 91,408.12 = 38,740.72 : x
  2. Step 2: Convert to fraction form
    61,048.12/91,408.12 = 38,740.72/x
  3. Step 3: Cross multiply
    61,048.12x = 91,408.12 × 38,740.72
  4. Step 4: Simplify right side
    61,048.12x = 3,541,216,382.65
  5. Step 5: Solve for x
    x = 3,541,216,382.65/61,048.12
  6. Step 6: Final answer
    x = 58,006.97

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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.