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Finding the Fourth Proportional to 56,871.50, 85,299.80 and 16,889.66

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Solution

The fourth proportional to 56,871.50, 85,299.80 and 16,889.66 is: 25,332.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,871.50 : 85,299.80 = 16,889.66 : x
  2. Step 2: Convert to fraction form
    56,871.50/85,299.80 = 16,889.66/x
  3. Step 3: Cross multiply
    56,871.50x = 85,299.80 × 16,889.66
  4. Step 4: Simplify right side
    56,871.50x = 1,440,684,428.99
  5. Step 5: Solve for x
    x = 1,440,684,428.99/56,871.50
  6. Step 6: Final answer
    x = 25,332.28

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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.