Home / 42,756.38-64,148.41-20,566.87

Finding the Fourth Proportional to 42,756.38, 64,148.41 and 20,566.87

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Solution

The fourth proportional to 42,756.38, 64,148.41 and 20,566.87 is: 30,856.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,756.38 : 64,148.41 = 20,566.87 : x
  2. Step 2: Convert to fraction form
    42,756.38/64,148.41 = 20,566.87/x
  3. Step 3: Cross multiply
    42,756.38x = 64,148.41 × 20,566.87
  4. Step 4: Simplify right side
    42,756.38x = 1,319,332,009.18
  5. Step 5: Solve for x
    x = 1,319,332,009.18/42,756.38
  6. Step 6: Final answer
    x = 30,856.96

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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.