Home / 91,243.12-136,822.98-28,041.23

Finding the Fourth Proportional to 91,243.12, 136,822.98 and 28,041.23

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Solution

The fourth proportional to 91,243.12, 136,822.98 and 28,041.23 is: 42,049.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,243.12 : 136,822.98 = 28,041.23 : x
  2. Step 2: Convert to fraction form
    91,243.12/136,822.98 = 28,041.23/x
  3. Step 3: Cross multiply
    91,243.12x = 136,822.98 × 28,041.23
  4. Step 4: Simplify right side
    91,243.12x = 3,836,684,651.47
  5. Step 5: Solve for x
    x = 3,836,684,651.47/91,243.12
  6. Step 6: Final answer
    x = 42,049.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.