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Finding the Fourth Proportional to 68,491.60, 102,737.40 and 47,365.18

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Solution

The fourth proportional to 68,491.60, 102,737.40 and 47,365.18 is: 71,047.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,491.60 : 102,737.40 = 47,365.18 : x
  2. Step 2: Convert to fraction form
    68,491.60/102,737.40 = 47,365.18/x
  3. Step 3: Cross multiply
    68,491.60x = 102,737.40 × 47,365.18
  4. Step 4: Simplify right side
    68,491.60x = 4,866,175,443.73
  5. Step 5: Solve for x
    x = 4,866,175,443.73/68,491.60
  6. Step 6: Final answer
    x = 71,047.77

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1.5x scale

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.