Home / 78,487.03-108,313.46-42,677.28

Finding the Fourth Proportional to 78,487.03, 108,313.46 and 42,677.28

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Solution

The fourth proportional to 78,487.03, 108,313.46 and 42,677.28 is: 58,895.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,487.03 : 108,313.46 = 42,677.28 : x
  2. Step 2: Convert to fraction form
    78,487.03/108,313.46 = 42,677.28/x
  3. Step 3: Cross multiply
    78,487.03x = 108,313.46 × 42,677.28
  4. Step 4: Simplify right side
    78,487.03x = 4,622,523,860.19
  5. Step 5: Solve for x
    x = 4,622,523,860.19/78,487.03
  6. Step 6: Final answer
    x = 58,895.39

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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.