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Finding the Fourth Proportional to 61,069.34, 91,617.06 and 18,948.50

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Solution

The fourth proportional to 61,069.34, 91,617.06 and 18,948.50 is: 28,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,069.34 : 91,617.06 = 18,948.50 : x
  2. Step 2: Convert to fraction form
    61,069.34/91,617.06 = 18,948.50/x
  3. Step 3: Cross multiply
    61,069.34x = 91,617.06 × 18,948.50
  4. Step 4: Simplify right side
    61,069.34x = 1,736,005,861.41
  5. Step 5: Solve for x
    x = 1,736,005,861.41/61,069.34
  6. Step 6: Final answer
    x = 28,426.80

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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.