Home / 70,437.28-97,191.12-40,208.80

Finding the Fourth Proportional to 70,437.28, 97,191.12 and 40,208.80

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Solution

The fourth proportional to 70,437.28, 97,191.12 and 40,208.80 is: 55,481.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,437.28 : 97,191.12 = 40,208.80 : x
  2. Step 2: Convert to fraction form
    70,437.28/97,191.12 = 40,208.80/x
  3. Step 3: Cross multiply
    70,437.28x = 97,191.12 × 40,208.80
  4. Step 4: Simplify right side
    70,437.28x = 3,907,938,305.86
  5. Step 5: Solve for x
    x = 3,907,938,305.86/70,437.28
  6. Step 6: Final answer
    x = 55,481.11

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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.