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Finding the Fourth Proportional to 40,745.70, 61,118.55 and 39,384.90

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Solution

The fourth proportional to 40,745.70, 61,118.55 and 39,384.90 is: 59,077.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,745.70 : 61,118.55 = 39,384.90 : x
  2. Step 2: Convert to fraction form
    40,745.70/61,118.55 = 39,384.90/x
  3. Step 3: Cross multiply
    40,745.70x = 61,118.55 × 39,384.90
  4. Step 4: Simplify right side
    40,745.70x = 2,407,147,979.90
  5. Step 5: Solve for x
    x = 2,407,147,979.90/40,745.70
  6. Step 6: Final answer
    x = 59,077.35

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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.