Home / 71,981.01-99,341.51-40,160.97

Finding the Fourth Proportional to 71,981.01, 99,341.51 and 40,160.97

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Solution

The fourth proportional to 71,981.01, 99,341.51 and 40,160.97 is: 55,426.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,981.01 : 99,341.51 = 40,160.97 : x
  2. Step 2: Convert to fraction form
    71,981.01/99,341.51 = 40,160.97/x
  3. Step 3: Cross multiply
    71,981.01x = 99,341.51 × 40,160.97
  4. Step 4: Simplify right side
    71,981.01x = 3,989,651,202.06
  5. Step 5: Solve for x
    x = 3,989,651,202.06/71,981.01
  6. Step 6: Final answer
    x = 55,426.44

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1.5x scale

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.