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Finding the Fourth Proportional to 101,805.39, 140,503.91 and 58,784.77

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Solution

The fourth proportional to 101,805.39, 140,503.91 and 58,784.77 is: 81,130.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,805.39 : 140,503.91 = 58,784.77 : x
  2. Step 2: Convert to fraction form
    101,805.39/140,503.91 = 58,784.77/x
  3. Step 3: Cross multiply
    101,805.39x = 140,503.91 × 58,784.77
  4. Step 4: Simplify right side
    101,805.39x = 8,259,489,915.16
  5. Step 5: Solve for x
    x = 8,259,489,915.16/101,805.39
  6. Step 6: Final answer
    x = 81,130.18

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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.