Home / 75,689.57-103,695.22-72,851.94

Finding the Fourth Proportional to 75,689.57, 103,695.22 and 72,851.94

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Solution

The fourth proportional to 75,689.57, 103,695.22 and 72,851.94 is: 99,807.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,689.57 : 103,695.22 = 72,851.94 : x
  2. Step 2: Convert to fraction form
    75,689.57/103,695.22 = 72,851.94/x
  3. Step 3: Cross multiply
    75,689.57x = 103,695.22 × 72,851.94
  4. Step 4: Simplify right side
    75,689.57x = 7,554,398,036.79
  5. Step 5: Solve for x
    x = 7,554,398,036.79/75,689.57
  6. Step 6: Final answer
    x = 99,807.65

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.