Home / 79,110.53-109,172.15-42,811.95

Finding the Fourth Proportional to 79,110.53, 109,172.15 and 42,811.95

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Solution

The fourth proportional to 79,110.53, 109,172.15 and 42,811.95 is: 59,080.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,110.53 : 109,172.15 = 42,811.95 : x
  2. Step 2: Convert to fraction form
    79,110.53/109,172.15 = 42,811.95/x
  3. Step 3: Cross multiply
    79,110.53x = 109,172.15 × 42,811.95
  4. Step 4: Simplify right side
    79,110.53x = 4,673,872,413.13
  5. Step 5: Solve for x
    x = 4,673,872,413.13/79,110.53
  6. Step 6: Final answer
    x = 59,080.29

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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.