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Finding the Fourth Proportional to 103,580.92, 155,374.73 and 28,701.80

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Solution

The fourth proportional to 103,580.92, 155,374.73 and 28,701.80 is: 43,053.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,580.92 : 155,374.73 = 28,701.80 : x
  2. Step 2: Convert to fraction form
    103,580.92/155,374.73 = 28,701.80/x
  3. Step 3: Cross multiply
    103,580.92x = 155,374.73 × 28,701.80
  4. Step 4: Simplify right side
    103,580.92x = 4,459,534,425.51
  5. Step 5: Solve for x
    x = 4,459,534,425.51/103,580.92
  6. Step 6: Final answer
    x = 43,053.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.