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Finding the Fourth Proportional to 115,878.40, 173,817.60 and 49,320.70

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Solution

The fourth proportional to 115,878.40, 173,817.60 and 49,320.70 is: 73,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,878.40 : 173,817.60 = 49,320.70 : x
  2. Step 2: Convert to fraction form
    115,878.40/173,817.60 = 49,320.70/x
  3. Step 3: Cross multiply
    115,878.40x = 173,817.60 × 49,320.70
  4. Step 4: Simplify right side
    115,878.40x = 8,572,805,704.32
  5. Step 5: Solve for x
    x = 8,572,805,704.32/115,878.40
  6. Step 6: Final answer
    x = 73,981.05

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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.