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Finding the Fourth Proportional to 61,356.88, 84,636.36 and 38,655.82

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Solution

The fourth proportional to 61,356.88, 84,636.36 and 38,655.82 is: 53,322.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,356.88 : 84,636.36 = 38,655.82 : x
  2. Step 2: Convert to fraction form
    61,356.88/84,636.36 = 38,655.82/x
  3. Step 3: Cross multiply
    61,356.88x = 84,636.36 × 38,655.82
  4. Step 4: Simplify right side
    61,356.88x = 3,271,687,897.62
  5. Step 5: Solve for x
    x = 3,271,687,897.62/61,356.88
  6. Step 6: Final answer
    x = 53,322.27

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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.