Home / 90,305.02-135,464.02-31,139.83

Finding the Fourth Proportional to 90,305.02, 135,464.02 and 31,139.83

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Solution

The fourth proportional to 90,305.02, 135,464.02 and 31,139.83 is: 46,711.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,305.02 : 135,464.02 = 31,139.83 : x
  2. Step 2: Convert to fraction form
    90,305.02/135,464.02 = 31,139.83/x
  3. Step 3: Cross multiply
    90,305.02x = 135,464.02 × 31,139.83
  4. Step 4: Simplify right side
    90,305.02x = 4,218,326,645.40
  5. Step 5: Solve for x
    x = 4,218,326,645.40/90,305.02
  6. Step 6: Final answer
    x = 46,711.99

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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.