Home / 42,859.69-64,247.15-20,330.87

Finding the Fourth Proportional to 42,859.69, 64,247.15 and 20,330.87

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Solution

The fourth proportional to 42,859.69, 64,247.15 and 20,330.87 is: 30,476.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,859.69 : 64,247.15 = 20,330.87 : x
  2. Step 2: Convert to fraction form
    42,859.69/64,247.15 = 20,330.87/x
  3. Step 3: Cross multiply
    42,859.69x = 64,247.15 × 20,330.87
  4. Step 4: Simplify right side
    42,859.69x = 1,306,200,184.11
  5. Step 5: Solve for x
    x = 1,306,200,184.11/42,859.69
  6. Step 6: Final answer
    x = 30,476.19

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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.