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Finding the Fourth Proportional to 78,332.40, 117,474.84 and 22,168.08

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Solution

The fourth proportional to 78,332.40, 117,474.84 and 22,168.08 is: 33,245.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,332.40 : 117,474.84 = 22,168.08 : x
  2. Step 2: Convert to fraction form
    78,332.40/117,474.84 = 22,168.08/x
  3. Step 3: Cross multiply
    78,332.40x = 117,474.84 × 22,168.08
  4. Step 4: Simplify right side
    78,332.40x = 2,604,191,651.11
  5. Step 5: Solve for x
    x = 2,604,191,651.11/78,332.40
  6. Step 6: Final answer
    x = 33,245.40

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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.