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Finding the Fourth Proportional to 78,396.59, 108,174.47 and 46,158.38

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Solution

The fourth proportional to 78,396.59, 108,174.47 and 46,158.38 is: 63,691.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,396.59 : 108,174.47 = 46,158.38 : x
  2. Step 2: Convert to fraction form
    78,396.59/108,174.47 = 46,158.38/x
  3. Step 3: Cross multiply
    78,396.59x = 108,174.47 × 46,158.38
  4. Step 4: Simplify right side
    78,396.59x = 4,993,158,292.56
  5. Step 5: Solve for x
    x = 4,993,158,292.56/78,396.59
  6. Step 6: Final answer
    x = 63,691.01

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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.