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Finding the Fourth Proportional to 61,118.16, 91,679.16 and 18,998.46

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Solution

The fourth proportional to 61,118.16, 91,679.16 and 18,998.46 is: 28,498.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,118.16 : 91,679.16 = 18,998.46 : x
  2. Step 2: Convert to fraction form
    61,118.16/91,679.16 = 18,998.46/x
  3. Step 3: Cross multiply
    61,118.16x = 91,679.16 × 18,998.46
  4. Step 4: Simplify right side
    61,118.16x = 1,741,762,854.09
  5. Step 5: Solve for x
    x = 1,741,762,854.09/61,118.16
  6. Step 6: Final answer
    x = 28,498.29

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1.5x scale

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.