Home / 57,217.29-85,829.72-19,780.98

Finding the Fourth Proportional to 57,217.29, 85,829.72 and 19,780.98

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Solution

The fourth proportional to 57,217.29, 85,829.72 and 19,780.98 is: 29,672.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,217.29 : 85,829.72 = 19,780.98 : x
  2. Step 2: Convert to fraction form
    57,217.29/85,829.72 = 19,780.98/x
  3. Step 3: Cross multiply
    57,217.29x = 85,829.72 × 19,780.98
  4. Step 4: Simplify right side
    57,217.29x = 1,697,795,875.82
  5. Step 5: Solve for x
    x = 1,697,795,875.82/57,217.29
  6. Step 6: Final answer
    x = 29,672.78

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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.