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Finding the Fourth Proportional to 68,678.92, 94,779.00 and 38,464.16

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Solution

The fourth proportional to 68,678.92, 94,779.00 and 38,464.16 is: 53,081.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,678.92 : 94,779.00 = 38,464.16 : x
  2. Step 2: Convert to fraction form
    68,678.92/94,779.00 = 38,464.16/x
  3. Step 3: Cross multiply
    68,678.92x = 94,779.00 × 38,464.16
  4. Step 4: Simplify right side
    68,678.92x = 3,645,594,428.32
  5. Step 5: Solve for x
    x = 3,645,594,428.32/68,678.92
  6. Step 6: Final answer
    x = 53,081.71

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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.