Home / 40,939.10-61,408.65-40,420.70

Finding the Fourth Proportional to 40,939.10, 61,408.65 and 40,420.70

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Solution

The fourth proportional to 40,939.10, 61,408.65 and 40,420.70 is: 60,631.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,939.10 : 61,408.65 = 40,420.70 : x
  2. Step 2: Convert to fraction form
    40,939.10/61,408.65 = 40,420.70/x
  3. Step 3: Cross multiply
    40,939.10x = 61,408.65 × 40,420.70
  4. Step 4: Simplify right side
    40,939.10x = 2,482,180,619.06
  5. Step 5: Solve for x
    x = 2,482,180,619.06/40,939.10
  6. Step 6: Final answer
    x = 60,631.05

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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.