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Finding the Fourth Proportional to 61,161, 84,402.36 and 35,684.88

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Solution

The fourth proportional to 61,161, 84,402.36 and 35,684.88 is: 49,245.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,161 : 84,402.36 = 35,684.88 : x
  2. Step 2: Convert to fraction form
    61,161/84,402.36 = 35,684.88/x
  3. Step 3: Cross multiply
    61,161x = 84,402.36 × 35,684.88
  4. Step 4: Simplify right side
    61,161x = 3,011,888,088.32
  5. Step 5: Solve for x
    x = 3,011,888,088.32/61,161
  6. Step 6: Final answer
    x = 49,245.24

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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.