Home / 40,708.85-61,071.98-12,628.30

Finding the Fourth Proportional to 40,708.85, 61,071.98 and 12,628.30

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Solution

The fourth proportional to 40,708.85, 61,071.98 and 12,628.30 is: 18,945.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,708.85 : 61,071.98 = 12,628.30 : x
  2. Step 2: Convert to fraction form
    40,708.85/61,071.98 = 12,628.30/x
  3. Step 3: Cross multiply
    40,708.85x = 61,071.98 × 12,628.30
  4. Step 4: Simplify right side
    40,708.85x = 771,235,011.24
  5. Step 5: Solve for x
    x = 771,235,011.24/40,708.85
  6. Step 6: Final answer
    x = 18,945.14

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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.