Home / 71,984.78-99,341.10-40,152.99

Finding the Fourth Proportional to 71,984.78, 99,341.10 and 40,152.99

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Solution

The fourth proportional to 71,984.78, 99,341.10 and 40,152.99 is: 55,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,984.78 : 99,341.10 = 40,152.99 : x
  2. Step 2: Convert to fraction form
    71,984.78/99,341.10 = 40,152.99/x
  3. Step 3: Cross multiply
    71,984.78x = 99,341.10 × 40,152.99
  4. Step 4: Simplify right side
    71,984.78x = 3,988,842,194.89
  5. Step 5: Solve for x
    x = 3,988,842,194.89/71,984.78
  6. Step 6: Final answer
    x = 55,412.30

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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.