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Finding the Fourth Proportional to 56,878.70, 85,248.86 and 40,243.55

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Solution

The fourth proportional to 56,878.70, 85,248.86 and 40,243.55 is: 60,316.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,878.70 : 85,248.86 = 40,243.55 : x
  2. Step 2: Convert to fraction form
    56,878.70/85,248.86 = 40,243.55/x
  3. Step 3: Cross multiply
    56,878.70x = 85,248.86 × 40,243.55
  4. Step 4: Simplify right side
    56,878.70x = 3,430,716,132.39
  5. Step 5: Solve for x
    x = 3,430,716,132.39/56,878.70
  6. Step 6: Final answer
    x = 60,316.37

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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.