Home / 90,836.02-136,254.78-31,671.58

Finding the Fourth Proportional to 90,836.02, 136,254.78 and 31,671.58

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Solution

The fourth proportional to 90,836.02, 136,254.78 and 31,671.58 is: 47,507.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,836.02 : 136,254.78 = 31,671.58 : x
  2. Step 2: Convert to fraction form
    90,836.02/136,254.78 = 31,671.58/x
  3. Step 3: Cross multiply
    90,836.02x = 136,254.78 × 31,671.58
  4. Step 4: Simplify right side
    90,836.02x = 4,315,404,165.15
  5. Step 5: Solve for x
    x = 4,315,404,165.15/90,836.02
  6. Step 6: Final answer
    x = 47,507.63

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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.