Home / 91,341.27-136,667.39-53,921.70

Finding the Fourth Proportional to 91,341.27, 136,667.39 and 53,921.70

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Solution

The fourth proportional to 91,341.27, 136,667.39 and 53,921.70 is: 80,679.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,341.27 : 136,667.39 = 53,921.70 : x
  2. Step 2: Convert to fraction form
    91,341.27/136,667.39 = 53,921.70/x
  3. Step 3: Cross multiply
    91,341.27x = 136,667.39 × 53,921.70
  4. Step 4: Simplify right side
    91,341.27x = 7,369,337,733.75
  5. Step 5: Solve for x
    x = 7,369,337,733.75/91,341.27
  6. Step 6: Final answer
    x = 80,679.17

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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.