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Finding the Fourth Proportional to 70,432, 105,651.85 and 17,841.94

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Solution

The fourth proportional to 70,432, 105,651.85 and 17,841.94 is: 26,763.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,432 : 105,651.85 = 17,841.94 : x
  2. Step 2: Convert to fraction form
    70,432/105,651.85 = 17,841.94/x
  3. Step 3: Cross multiply
    70,432x = 105,651.85 × 17,841.94
  4. Step 4: Simplify right side
    70,432x = 1,885,033,968.59
  5. Step 5: Solve for x
    x = 1,885,033,968.59/70,432
  6. Step 6: Final answer
    x = 26,763.89

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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.