Home / 90,568.29-135,907.70-57,242.46

Finding the Fourth Proportional to 90,568.29, 135,907.70 and 57,242.46

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Solution

The fourth proportional to 90,568.29, 135,907.70 and 57,242.46 is: 85,898.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,568.29 : 135,907.70 = 57,242.46 : x
  2. Step 2: Convert to fraction form
    90,568.29/135,907.70 = 57,242.46/x
  3. Step 3: Cross multiply
    90,568.29x = 135,907.70 × 57,242.46
  4. Step 4: Simplify right side
    90,568.29x = 7,779,691,080.94
  5. Step 5: Solve for x
    x = 7,779,691,080.94/90,568.29
  6. Step 6: Final answer
    x = 85,898.62

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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.