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Finding the Fourth Proportional to 56,005.80, 84,006.90 and 18,567.60

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Solution

The fourth proportional to 56,005.80, 84,006.90 and 18,567.60 is: 27,850.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,005.80 : 84,006.90 = 18,567.60 : x
  2. Step 2: Convert to fraction form
    56,005.80/84,006.90 = 18,567.60/x
  3. Step 3: Cross multiply
    56,005.80x = 84,006.90 × 18,567.60
  4. Step 4: Simplify right side
    56,005.80x = 1,559,806,516.44
  5. Step 5: Solve for x
    x = 1,559,806,516.44/56,005.80
  6. Step 6: Final answer
    x = 27,850.80

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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.