Home / 72,401.41-99,916.65-40,569.13

Finding the Fourth Proportional to 72,401.41, 99,916.65 and 40,569.13

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Solution

The fourth proportional to 72,401.41, 99,916.65 and 40,569.13 is: 55,986.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,401.41 : 99,916.65 = 40,569.13 : x
  2. Step 2: Convert to fraction form
    72,401.41/99,916.65 = 40,569.13/x
  3. Step 3: Cross multiply
    72,401.41x = 99,916.65 × 40,569.13
  4. Step 4: Simplify right side
    72,401.41x = 4,053,530,860.59
  5. Step 5: Solve for x
    x = 4,053,530,860.59/72,401.41
  6. Step 6: Final answer
    x = 55,986.91

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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.