Home / 78,318.51-108,078.38-44,333.45

Finding the Fourth Proportional to 78,318.51, 108,078.38 and 44,333.45

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Solution

The fourth proportional to 78,318.51, 108,078.38 and 44,333.45 is: 61,179.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,318.51 : 108,078.38 = 44,333.45 : x
  2. Step 2: Convert to fraction form
    78,318.51/108,078.38 = 44,333.45/x
  3. Step 3: Cross multiply
    78,318.51x = 108,078.38 × 44,333.45
  4. Step 4: Simplify right side
    78,318.51x = 4,791,486,693.75
  5. Step 5: Solve for x
    x = 4,791,486,693.75/78,318.51
  6. Step 6: Final answer
    x = 61,179.49

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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.