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Finding the Fourth Proportional to 61,053.39, 84,254.52 and 39,820.47

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Solution

The fourth proportional to 61,053.39, 84,254.52 and 39,820.47 is: 54,952.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,053.39 : 84,254.52 = 39,820.47 : x
  2. Step 2: Convert to fraction form
    61,053.39/84,254.52 = 39,820.47/x
  3. Step 3: Cross multiply
    61,053.39x = 84,254.52 × 39,820.47
  4. Step 4: Simplify right side
    61,053.39x = 3,355,054,586.02
  5. Step 5: Solve for x
    x = 3,355,054,586.02/61,053.39
  6. Step 6: Final answer
    x = 54,952.80

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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.