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Finding the Fourth Proportional to 61,149.10, 91,723.65 and 43,434.40

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Solution

The fourth proportional to 61,149.10, 91,723.65 and 43,434.40 is: 65,151.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,149.10 : 91,723.65 = 43,434.40 : x
  2. Step 2: Convert to fraction form
    61,149.10/91,723.65 = 43,434.40/x
  3. Step 3: Cross multiply
    61,149.10x = 91,723.65 × 43,434.40
  4. Step 4: Simplify right side
    61,149.10x = 3,983,961,703.56
  5. Step 5: Solve for x
    x = 3,983,961,703.56/61,149.10
  6. Step 6: Final answer
    x = 65,151.60

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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.