Home / 42,408.10-63,612.15-30,657.70

Finding the Fourth Proportional to 42,408.10, 63,612.15 and 30,657.70

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Solution

The fourth proportional to 42,408.10, 63,612.15 and 30,657.70 is: 45,986.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,408.10 : 63,612.15 = 30,657.70 : x
  2. Step 2: Convert to fraction form
    42,408.10/63,612.15 = 30,657.70/x
  3. Step 3: Cross multiply
    42,408.10x = 63,612.15 × 30,657.70
  4. Step 4: Simplify right side
    42,408.10x = 1,950,202,211.06
  5. Step 5: Solve for x
    x = 1,950,202,211.06/42,408.10
  6. Step 6: Final answer
    x = 45,986.55

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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.