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Finding the Fourth Proportional to 61,988.90, 85,546.48 and 35,130.51

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Solution

The fourth proportional to 61,988.90, 85,546.48 and 35,130.51 is: 48,481.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,988.90 : 85,546.48 = 35,130.51 : x
  2. Step 2: Convert to fraction form
    61,988.90/85,546.48 = 35,130.51/x
  3. Step 3: Cross multiply
    61,988.90x = 85,546.48 × 35,130.51
  4. Step 4: Simplify right side
    61,988.90x = 3,005,291,449.15
  5. Step 5: Solve for x
    x = 3,005,291,449.15/61,988.90
  6. Step 6: Final answer
    x = 48,481.13

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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.