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Finding the Fourth Proportional to 115,784.70, 173,677.05 and 40,989.30

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Solution

The fourth proportional to 115,784.70, 173,677.05 and 40,989.30 is: 61,483.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,784.70 : 173,677.05 = 40,989.30 : x
  2. Step 2: Convert to fraction form
    115,784.70/173,677.05 = 40,989.30/x
  3. Step 3: Cross multiply
    115,784.70x = 173,677.05 × 40,989.30
  4. Step 4: Simplify right side
    115,784.70x = 7,118,900,705.57
  5. Step 5: Solve for x
    x = 7,118,900,705.57/115,784.70
  6. Step 6: Final answer
    x = 61,483.95

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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.