Home / 83,433.16-115,153.78-65,247.86

Finding the Fourth Proportional to 83,433.16, 115,153.78 and 65,247.86

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Solution

The fourth proportional to 83,433.16, 115,153.78 and 65,247.86 is: 90,054.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,433.16 : 115,153.78 = 65,247.86 : x
  2. Step 2: Convert to fraction form
    83,433.16/115,153.78 = 65,247.86/x
  3. Step 3: Cross multiply
    83,433.16x = 115,153.78 × 65,247.86
  4. Step 4: Simplify right side
    83,433.16x = 7,513,537,715.91
  5. Step 5: Solve for x
    x = 7,513,537,715.91/83,433.16
  6. Step 6: Final answer
    x = 90,054.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.