Home / 91,080.81-136,621.56-27,900.68

Finding the Fourth Proportional to 91,080.81, 136,621.56 and 27,900.68

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Solution

The fourth proportional to 91,080.81, 136,621.56 and 27,900.68 is: 41,851.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,080.81 : 136,621.56 = 27,900.68 : x
  2. Step 2: Convert to fraction form
    91,080.81/136,621.56 = 27,900.68/x
  3. Step 3: Cross multiply
    91,080.81x = 136,621.56 × 27,900.68
  4. Step 4: Simplify right side
    91,080.81x = 3,811,833,743.55
  5. Step 5: Solve for x
    x = 3,811,833,743.55/91,080.81
  6. Step 6: Final answer
    x = 41,851.12

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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.