Home / 78,776.92-118,167-43,938.28

Finding the Fourth Proportional to 78,776.92, 118,167 and 43,938.28

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Solution

The fourth proportional to 78,776.92, 118,167 and 43,938.28 is: 65,908.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,776.92 : 118,167 = 43,938.28 : x
  2. Step 2: Convert to fraction form
    78,776.92/118,167 = 43,938.28/x
  3. Step 3: Cross multiply
    78,776.92x = 118,167 × 43,938.28
  4. Step 4: Simplify right side
    78,776.92x = 5,192,054,732.76
  5. Step 5: Solve for x
    x = 5,192,054,732.76/78,776.92
  6. Step 6: Final answer
    x = 65,908.32

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1.5x scale

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.