Home / 78,455.46-108,269.28-46,618.20

Finding the Fourth Proportional to 78,455.46, 108,269.28 and 46,618.20

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Solution

The fourth proportional to 78,455.46, 108,269.28 and 46,618.20 is: 64,333.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,455.46 : 108,269.28 = 46,618.20 : x
  2. Step 2: Convert to fraction form
    78,455.46/108,269.28 = 46,618.20/x
  3. Step 3: Cross multiply
    78,455.46x = 108,269.28 × 46,618.20
  4. Step 4: Simplify right side
    78,455.46x = 5,047,318,948.90
  5. Step 5: Solve for x
    x = 5,047,318,948.90/78,455.46
  6. Step 6: Final answer
    x = 64,333.56

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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.