Home / 40,212.20-60,312.72-28,167.88

Finding the Fourth Proportional to 40,212.20, 60,312.72 and 28,167.88

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Solution

The fourth proportional to 40,212.20, 60,312.72 and 28,167.88 is: 42,247.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,212.20 : 60,312.72 = 28,167.88 : x
  2. Step 2: Convert to fraction form
    40,212.20/60,312.72 = 28,167.88/x
  3. Step 3: Cross multiply
    40,212.20x = 60,312.72 × 28,167.88
  4. Step 4: Simplify right side
    40,212.20x = 1,698,881,459.43
  5. Step 5: Solve for x
    x = 1,698,881,459.43/40,212.20
  6. Step 6: Final answer
    x = 42,247.91

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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.