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Finding the Fourth Proportional to 61,497.21, 84,837.15 and 35,987.79

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Solution

The fourth proportional to 61,497.21, 84,837.15 and 35,987.79 is: 49,646.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,497.21 : 84,837.15 = 35,987.79 : x
  2. Step 2: Convert to fraction form
    61,497.21/84,837.15 = 35,987.79/x
  3. Step 3: Cross multiply
    61,497.21x = 84,837.15 × 35,987.79
  4. Step 4: Simplify right side
    61,497.21x = 3,053,101,538.40
  5. Step 5: Solve for x
    x = 3,053,101,538.40/61,497.21
  6. Step 6: Final answer
    x = 49,646.18

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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.