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Finding the Fourth Proportional to 103,710.50, 155,565.76 and 29,838.50

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Solution

The fourth proportional to 103,710.50, 155,565.76 and 29,838.50 is: 44,757.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,710.50 : 155,565.76 = 29,838.50 : x
  2. Step 2: Convert to fraction form
    103,710.50/155,565.76 = 29,838.50/x
  3. Step 3: Cross multiply
    103,710.50x = 155,565.76 × 29,838.50
  4. Step 4: Simplify right side
    103,710.50x = 4,641,848,929.76
  5. Step 5: Solve for x
    x = 4,641,848,929.76/103,710.50
  6. Step 6: Final answer
    x = 44,757.75

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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.