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Finding the Fourth Proportional to 78,834.80, 118,057.80 and 52,396.40

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Solution

The fourth proportional to 78,834.80, 118,057.80 and 52,396.40 is: 78,465.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,834.80 : 118,057.80 = 52,396.40 : x
  2. Step 2: Convert to fraction form
    78,834.80/118,057.80 = 52,396.40/x
  3. Step 3: Cross multiply
    78,834.80x = 118,057.80 × 52,396.40
  4. Step 4: Simplify right side
    78,834.80x = 6,185,803,711.92
  5. Step 5: Solve for x
    x = 6,185,803,711.92/78,834.80
  6. Step 6: Final answer
    x = 78,465.39

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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.