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Finding the Fourth Proportional to 57,878.16, 86,830.32 and 18,437.52

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Solution

The fourth proportional to 57,878.16, 86,830.32 and 18,437.52 is: 27,660.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,878.16 : 86,830.32 = 18,437.52 : x
  2. Step 2: Convert to fraction form
    57,878.16/86,830.32 = 18,437.52/x
  3. Step 3: Cross multiply
    57,878.16x = 86,830.32 × 18,437.52
  4. Step 4: Simplify right side
    57,878.16x = 1,600,935,761.61
  5. Step 5: Solve for x
    x = 1,600,935,761.61/57,878.16
  6. Step 6: Final answer
    x = 27,660.45

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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.