Home / 63,678.05-87,876.11-39,818.69

Finding the Fourth Proportional to 63,678.05, 87,876.11 and 39,818.69

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Solution

The fourth proportional to 63,678.05, 87,876.11 and 39,818.69 is: 54,950.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,678.05 : 87,876.11 = 39,818.69 : x
  2. Step 2: Convert to fraction form
    63,678.05/87,876.11 = 39,818.69/x
  3. Step 3: Cross multiply
    63,678.05x = 87,876.11 × 39,818.69
  4. Step 4: Simplify right side
    63,678.05x = 3,499,111,901.73
  5. Step 5: Solve for x
    x = 3,499,111,901.73/63,678.05
  6. Step 6: Final answer
    x = 54,950.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.