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Finding the Fourth Proportional to 57,628.59, 86,445.59 and 28,011.12

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Solution

The fourth proportional to 57,628.59, 86,445.59 and 28,011.12 is: 42,017.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,628.59 : 86,445.59 = 28,011.12 : x
  2. Step 2: Convert to fraction form
    57,628.59/86,445.59 = 28,011.12/x
  3. Step 3: Cross multiply
    57,628.59x = 86,445.59 × 28,011.12
  4. Step 4: Simplify right side
    57,628.59x = 2,421,437,794.96
  5. Step 5: Solve for x
    x = 2,421,437,794.96/57,628.59
  6. Step 6: Final answer
    x = 42,017.99

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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.