Home / 75,144.12-103,699.02-40,689.24

Finding the Fourth Proportional to 75,144.12, 103,699.02 and 40,689.24

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Solution

The fourth proportional to 75,144.12, 103,699.02 and 40,689.24 is: 56,151.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,144.12 : 103,699.02 = 40,689.24 : x
  2. Step 2: Convert to fraction form
    75,144.12/103,699.02 = 40,689.24/x
  3. Step 3: Cross multiply
    75,144.12x = 103,699.02 × 40,689.24
  4. Step 4: Simplify right side
    75,144.12x = 4,219,434,312.54
  5. Step 5: Solve for x
    x = 4,219,434,312.54/75,144.12
  6. Step 6: Final answer
    x = 56,151.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.