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Finding the Fourth Proportional to 78,874.80, 118,117.80 and 52,436.40

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Solution

The fourth proportional to 78,874.80, 118,117.80 and 52,436.40 is: 78,525.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,874.80 : 118,117.80 = 52,436.40 : x
  2. Step 2: Convert to fraction form
    78,874.80/118,117.80 = 52,436.40/x
  3. Step 3: Cross multiply
    78,874.80x = 118,117.80 × 52,436.40
  4. Step 4: Simplify right side
    78,874.80x = 6,193,672,207.92
  5. Step 5: Solve for x
    x = 6,193,672,207.92/78,874.80
  6. Step 6: Final answer
    x = 78,525.36

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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.