Home / 91,242.12-136,821.48-28,040.23

Finding the Fourth Proportional to 91,242.12, 136,821.48 and 28,040.23

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Solution

The fourth proportional to 91,242.12, 136,821.48 and 28,040.23 is: 42,047.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,242.12 : 136,821.48 = 28,040.23 : x
  2. Step 2: Convert to fraction form
    91,242.12/136,821.48 = 28,040.23/x
  3. Step 3: Cross multiply
    91,242.12x = 136,821.48 × 28,040.23
  4. Step 4: Simplify right side
    91,242.12x = 3,836,505,143.26
  5. Step 5: Solve for x
    x = 3,836,505,143.26/91,242.12
  6. Step 6: Final answer
    x = 42,047.52

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1.5x scale

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.