Home / 90,332.80-135,561.36-31,168.50

Finding the Fourth Proportional to 90,332.80, 135,561.36 and 31,168.50

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Solution

The fourth proportional to 90,332.80, 135,561.36 and 31,168.50 is: 46,774.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,332.80 : 135,561.36 = 31,168.50 : x
  2. Step 2: Convert to fraction form
    90,332.80/135,561.36 = 31,168.50/x
  3. Step 3: Cross multiply
    90,332.80x = 135,561.36 × 31,168.50
  4. Step 4: Simplify right side
    90,332.80x = 4,225,244,249.16
  5. Step 5: Solve for x
    x = 4,225,244,249.16/90,332.80
  6. Step 6: Final answer
    x = 46,774.20

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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.