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Finding the Fourth Proportional to 78,892.80, 118,144.80 and 52,454.40

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Solution

The fourth proportional to 78,892.80, 118,144.80 and 52,454.40 is: 78,552.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,892.80 : 118,144.80 = 52,454.40 : x
  2. Step 2: Convert to fraction form
    78,892.80/118,144.80 = 52,454.40/x
  3. Step 3: Cross multiply
    78,892.80x = 118,144.80 × 52,454.40
  4. Step 4: Simplify right side
    78,892.80x = 6,197,214,597.12
  5. Step 5: Solve for x
    x = 6,197,214,597.12/78,892.80
  6. Step 6: Final answer
    x = 78,552.35

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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.