Home / 78,936.16-108,925.68-45,404.32

Finding the Fourth Proportional to 78,936.16, 108,925.68 and 45,404.32

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Solution

The fourth proportional to 78,936.16, 108,925.68 and 45,404.32 is: 62,654.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,936.16 : 108,925.68 = 45,404.32 : x
  2. Step 2: Convert to fraction form
    78,936.16/108,925.68 = 45,404.32/x
  3. Step 3: Cross multiply
    78,936.16x = 108,925.68 × 45,404.32
  4. Step 4: Simplify right side
    78,936.16x = 4,945,696,430.94
  5. Step 5: Solve for x
    x = 4,945,696,430.94/78,936.16
  6. Step 6: Final answer
    x = 62,654.38

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1.5x scale

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.