Home / 79,176.18-109,199.43-61,319.46

Finding the Fourth Proportional to 79,176.18, 109,199.43 and 61,319.46

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Solution

The fourth proportional to 79,176.18, 109,199.43 and 61,319.46 is: 84,571.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,176.18 : 109,199.43 = 61,319.46 : x
  2. Step 2: Convert to fraction form
    79,176.18/109,199.43 = 61,319.46/x
  3. Step 3: Cross multiply
    79,176.18x = 109,199.43 × 61,319.46
  4. Step 4: Simplify right side
    79,176.18x = 6,696,050,079.91
  5. Step 5: Solve for x
    x = 6,696,050,079.91/79,176.18
  6. Step 6: Final answer
    x = 84,571.52

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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.