Home / 79,186.15-109,278.65-45,193.95

Finding the Fourth Proportional to 79,186.15, 109,278.65 and 45,193.95

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Solution

The fourth proportional to 79,186.15, 109,278.65 and 45,193.95 is: 62,368.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,186.15 : 109,278.65 = 45,193.95 : x
  2. Step 2: Convert to fraction form
    79,186.15/109,278.65 = 45,193.95/x
  3. Step 3: Cross multiply
    79,186.15x = 109,278.65 × 45,193.95
  4. Step 4: Simplify right side
    79,186.15x = 4,938,734,137.39
  5. Step 5: Solve for x
    x = 4,938,734,137.39/79,186.15
  6. Step 6: Final answer
    x = 62,368.66

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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.