Home / 40,731.45-61,115.40-18,533.40

Finding the Fourth Proportional to 40,731.45, 61,115.40 and 18,533.40

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Solution

The fourth proportional to 40,731.45, 61,115.40 and 18,533.40 is: 27,808.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,731.45 : 61,115.40 = 18,533.40 : x
  2. Step 2: Convert to fraction form
    40,731.45/61,115.40 = 18,533.40/x
  3. Step 3: Cross multiply
    40,731.45x = 61,115.40 × 18,533.40
  4. Step 4: Simplify right side
    40,731.45x = 1,132,676,154.36
  5. Step 5: Solve for x
    x = 1,132,676,154.36/40,731.45
  6. Step 6: Final answer
    x = 27,808.39

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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.