Home / 83,130.75-114,721.04-45,405

Finding the Fourth Proportional to 83,130.75, 114,721.04 and 45,405

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Solution

The fourth proportional to 83,130.75, 114,721.04 and 45,405 is: 62,659.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,130.75 : 114,721.04 = 45,405 : x
  2. Step 2: Convert to fraction form
    83,130.75/114,721.04 = 45,405/x
  3. Step 3: Cross multiply
    83,130.75x = 114,721.04 × 45,405
  4. Step 4: Simplify right side
    83,130.75x = 5,208,908,934.71
  5. Step 5: Solve for x
    x = 5,208,908,934.71/83,130.75
  6. Step 6: Final answer
    x = 62,659.23

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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.