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Finding the Fourth Proportional to 68,779.10, 103,168.65 and 51,283.10

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Solution

The fourth proportional to 68,779.10, 103,168.65 and 51,283.10 is: 76,924.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,779.10 : 103,168.65 = 51,283.10 : x
  2. Step 2: Convert to fraction form
    68,779.10/103,168.65 = 51,283.10/x
  3. Step 3: Cross multiply
    68,779.10x = 103,168.65 × 51,283.10
  4. Step 4: Simplify right side
    68,779.10x = 5,290,808,194.82
  5. Step 5: Solve for x
    x = 5,290,808,194.82/68,779.10
  6. Step 6: Final answer
    x = 76,924.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.