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Finding the Fourth Proportional to 71,369.16, 98,499.78 and 43,078.92

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Solution

The fourth proportional to 71,369.16, 98,499.78 and 43,078.92 is: 59,455.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,369.16 : 98,499.78 = 43,078.92 : x
  2. Step 2: Convert to fraction form
    71,369.16/98,499.78 = 43,078.92/x
  3. Step 3: Cross multiply
    71,369.16x = 98,499.78 × 43,078.92
  4. Step 4: Simplify right side
    71,369.16x = 4,243,264,142.64
  5. Step 5: Solve for x
    x = 4,243,264,142.64/71,369.16
  6. Step 6: Final answer
    x = 59,455.15

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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.