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Finding the Fourth Proportional to 52,574.72, 78,860.64 and 21,432.32

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Solution

The fourth proportional to 52,574.72, 78,860.64 and 21,432.32 is: 32,147.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,574.72 : 78,860.64 = 21,432.32 : x
  2. Step 2: Convert to fraction form
    52,574.72/78,860.64 = 21,432.32/x
  3. Step 3: Cross multiply
    52,574.72x = 78,860.64 × 21,432.32
  4. Step 4: Simplify right side
    52,574.72x = 1,690,166,471.88
  5. Step 5: Solve for x
    x = 1,690,166,471.88/52,574.72
  6. Step 6: Final answer
    x = 32,147.89

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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.