Home / 47,785.38-71,686.71-19,689.81

Finding the Fourth Proportional to 47,785.38, 71,686.71 and 19,689.81

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Solution

The fourth proportional to 47,785.38, 71,686.71 and 19,689.81 is: 29,538.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,785.38 : 71,686.71 = 19,689.81 : x
  2. Step 2: Convert to fraction form
    47,785.38/71,686.71 = 19,689.81/x
  3. Step 3: Cross multiply
    47,785.38x = 71,686.71 × 19,689.81
  4. Step 4: Simplify right side
    47,785.38x = 1,411,497,699.43
  5. Step 5: Solve for x
    x = 1,411,497,699.43/47,785.38
  6. Step 6: Final answer
    x = 29,538.28

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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.