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Finding the Fourth Proportional to 56,681.70, 85,022.55 and 19,745.70

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Solution

The fourth proportional to 56,681.70, 85,022.55 and 19,745.70 is: 29,618.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,681.70 : 85,022.55 = 19,745.70 : x
  2. Step 2: Convert to fraction form
    56,681.70/85,022.55 = 19,745.70/x
  3. Step 3: Cross multiply
    56,681.70x = 85,022.55 × 19,745.70
  4. Step 4: Simplify right side
    56,681.70x = 1,678,829,765.54
  5. Step 5: Solve for x
    x = 1,678,829,765.54/56,681.70
  6. Step 6: Final answer
    x = 29,618.55

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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.