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Finding the Fourth Proportional to 60,369.21, 90,387.59 and 30,641.66

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Solution

The fourth proportional to 60,369.21, 90,387.59 and 30,641.66 is: 45,878.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,369.21 : 90,387.59 = 30,641.66 : x
  2. Step 2: Convert to fraction form
    60,369.21/90,387.59 = 30,641.66/x
  3. Step 3: Cross multiply
    60,369.21x = 90,387.59 × 30,641.66
  4. Step 4: Simplify right side
    60,369.21x = 2,769,625,195.85
  5. Step 5: Solve for x
    x = 2,769,625,195.85/60,369.21
  6. Step 6: Final answer
    x = 45,878.11

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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.