Home / 90,386.46-135,535.95-31,201.38

Finding the Fourth Proportional to 90,386.46, 135,535.95 and 31,201.38

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Solution

The fourth proportional to 90,386.46, 135,535.95 and 31,201.38 is: 46,786.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,386.46 : 135,535.95 = 31,201.38 : x
  2. Step 2: Convert to fraction form
    90,386.46/135,535.95 = 31,201.38/x
  3. Step 3: Cross multiply
    90,386.46x = 135,535.95 × 31,201.38
  4. Step 4: Simplify right side
    90,386.46x = 4,228,908,679.61
  5. Step 5: Solve for x
    x = 4,228,908,679.61/90,386.46
  6. Step 6: Final answer
    x = 46,786.97

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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.