Home / 71,868.29-99,178.37-40,038.32

Finding the Fourth Proportional to 71,868.29, 99,178.37 and 40,038.32

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Solution

The fourth proportional to 71,868.29, 99,178.37 and 40,038.32 is: 55,252.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,868.29 : 99,178.37 = 40,038.32 : x
  2. Step 2: Convert to fraction form
    71,868.29/99,178.37 = 40,038.32/x
  3. Step 3: Cross multiply
    71,868.29x = 99,178.37 × 40,038.32
  4. Step 4: Simplify right side
    71,868.29x = 3,970,934,619.05
  5. Step 5: Solve for x
    x = 3,970,934,619.05/71,868.29
  6. Step 6: Final answer
    x = 55,252.95

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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.