Home / 90,851.68-136,228.06-31,671.44

Finding the Fourth Proportional to 90,851.68, 136,228.06 and 31,671.44

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Solution

The fourth proportional to 90,851.68, 136,228.06 and 31,671.44 is: 47,489.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,851.68 : 136,228.06 = 31,671.44 : x
  2. Step 2: Convert to fraction form
    90,851.68/136,228.06 = 31,671.44/x
  3. Step 3: Cross multiply
    90,851.68x = 136,228.06 × 31,671.44
  4. Step 4: Simplify right side
    90,851.68x = 4,314,538,828.61
  5. Step 5: Solve for x
    x = 4,314,538,828.61/90,851.68
  6. Step 6: Final answer
    x = 47,489.92

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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.