Home / 78,565.24-117,847.86-64,685.08

Finding the Fourth Proportional to 78,565.24, 117,847.86 and 64,685.08

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Solution

The fourth proportional to 78,565.24, 117,847.86 and 64,685.08 is: 97,027.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,565.24 : 117,847.86 = 64,685.08 : x
  2. Step 2: Convert to fraction form
    78,565.24/117,847.86 = 64,685.08/x
  3. Step 3: Cross multiply
    78,565.24x = 117,847.86 × 64,685.08
  4. Step 4: Simplify right side
    78,565.24x = 7,622,998,251.93
  5. Step 5: Solve for x
    x = 7,622,998,251.93/78,565.24
  6. Step 6: Final answer
    x = 97,027.62

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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.