Home / 71,984.90-99,341.28-40,153.12

Finding the Fourth Proportional to 71,984.90, 99,341.28 and 40,153.12

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Solution

The fourth proportional to 71,984.90, 99,341.28 and 40,153.12 is: 55,412.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,984.90 : 99,341.28 = 40,153.12 : x
  2. Step 2: Convert to fraction form
    71,984.90/99,341.28 = 40,153.12/x
  3. Step 3: Cross multiply
    71,984.90x = 99,341.28 × 40,153.12
  4. Step 4: Simplify right side
    71,984.90x = 3,988,862,336.79
  5. Step 5: Solve for x
    x = 3,988,862,336.79/71,984.90
  6. Step 6: Final answer
    x = 55,412.49

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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.