Home / 90,474.40-135,690.94-34,320.74

Finding the Fourth Proportional to 90,474.40, 135,690.94 and 34,320.74

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Solution

The fourth proportional to 90,474.40, 135,690.94 and 34,320.74 is: 51,473.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,474.40 : 135,690.94 = 34,320.74 : x
  2. Step 2: Convert to fraction form
    90,474.40/135,690.94 = 34,320.74/x
  3. Step 3: Cross multiply
    90,474.40x = 135,690.94 × 34,320.74
  4. Step 4: Simplify right side
    90,474.40x = 4,657,013,854.22
  5. Step 5: Solve for x
    x = 4,657,013,854.22/90,474.40
  6. Step 6: Final answer
    x = 51,473.28

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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.