Home / 67,186.89-100,780.34-47,700.72

Finding the Fourth Proportional to 67,186.89, 100,780.34 and 47,700.72

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Solution

The fourth proportional to 67,186.89, 100,780.34 and 47,700.72 is: 71,551.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,186.89 : 100,780.34 = 47,700.72 : x
  2. Step 2: Convert to fraction form
    67,186.89/100,780.34 = 47,700.72/x
  3. Step 3: Cross multiply
    67,186.89x = 100,780.34 × 47,700.72
  4. Step 4: Simplify right side
    67,186.89x = 4,807,294,541.34
  5. Step 5: Solve for x
    x = 4,807,294,541.34/67,186.89
  6. Step 6: Final answer
    x = 71,551.08

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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.