Home / 78,675.49-108,568.11-42,865.39

Finding the Fourth Proportional to 78,675.49, 108,568.11 and 42,865.39

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Solution

The fourth proportional to 78,675.49, 108,568.11 and 42,865.39 is: 59,152.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,675.49 : 108,568.11 = 42,865.39 : x
  2. Step 2: Convert to fraction form
    78,675.49/108,568.11 = 42,865.39/x
  3. Step 3: Cross multiply
    78,675.49x = 108,568.11 × 42,865.39
  4. Step 4: Simplify right side
    78,675.49x = 4,653,814,376.71
  5. Step 5: Solve for x
    x = 4,653,814,376.71/78,675.49
  6. Step 6: Final answer
    x = 59,152.02

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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.