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Finding the Fourth Proportional to 52,572.80, 78,880.80 and 19,308.80

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Solution

The fourth proportional to 52,572.80, 78,880.80 and 19,308.80 is: 28,971.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,572.80 : 78,880.80 = 19,308.80 : x
  2. Step 2: Convert to fraction form
    52,572.80/78,880.80 = 19,308.80/x
  3. Step 3: Cross multiply
    52,572.80x = 78,880.80 × 19,308.80
  4. Step 4: Simplify right side
    52,572.80x = 1,523,093,591.04
  5. Step 5: Solve for x
    x = 1,523,093,591.04/52,572.80
  6. Step 6: Final answer
    x = 28,971.13

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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.