Home / 90,423.30-135,443.52-57,126.36

Finding the Fourth Proportional to 90,423.30, 135,443.52 and 57,126.36

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Solution

The fourth proportional to 90,423.30, 135,443.52 and 57,126.36 is: 85,568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,423.30 : 135,443.52 = 57,126.36 : x
  2. Step 2: Convert to fraction form
    90,423.30/135,443.52 = 57,126.36/x
  3. Step 3: Cross multiply
    90,423.30x = 135,443.52 × 57,126.36
  4. Step 4: Simplify right side
    90,423.30x = 7,737,395,283.19
  5. Step 5: Solve for x
    x = 7,737,395,283.19/90,423.30
  6. Step 6: Final answer
    x = 85,568.60

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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.