Home / 42,686.04-63,977.21-30,209.71

Finding the Fourth Proportional to 42,686.04, 63,977.21 and 30,209.71

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Solution

The fourth proportional to 42,686.04, 63,977.21 and 30,209.71 is: 45,277.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,686.04 : 63,977.21 = 30,209.71 : x
  2. Step 2: Convert to fraction form
    42,686.04/63,977.21 = 30,209.71/x
  3. Step 3: Cross multiply
    42,686.04x = 63,977.21 × 30,209.71
  4. Step 4: Simplify right side
    42,686.04x = 1,932,732,876.29
  5. Step 5: Solve for x
    x = 1,932,732,876.29/42,686.04
  6. Step 6: Final answer
    x = 45,277.87

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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.