Home / 40,881.78-61,331.51-12,416.39

Finding the Fourth Proportional to 40,881.78, 61,331.51 and 12,416.39

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Solution

The fourth proportional to 40,881.78, 61,331.51 and 12,416.39 is: 18,627.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,881.78 : 61,331.51 = 12,416.39 : x
  2. Step 2: Convert to fraction form
    40,881.78/61,331.51 = 12,416.39/x
  3. Step 3: Cross multiply
    40,881.78x = 61,331.51 × 12,416.39
  4. Step 4: Simplify right side
    40,881.78x = 761,515,947.45
  5. Step 5: Solve for x
    x = 761,515,947.45/40,881.78
  6. Step 6: Final answer
    x = 18,627.27

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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.