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Finding the Fourth Proportional to 37,887.81, 56,830.08 and 20,391.81

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Solution

The fourth proportional to 37,887.81, 56,830.08 and 20,391.81 is: 30,586.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,887.81 : 56,830.08 = 20,391.81 : x
  2. Step 2: Convert to fraction form
    37,887.81/56,830.08 = 20,391.81/x
  3. Step 3: Cross multiply
    37,887.81x = 56,830.08 × 20,391.81
  4. Step 4: Simplify right side
    37,887.81x = 1,158,868,193.64
  5. Step 5: Solve for x
    x = 1,158,868,193.64/37,887.81
  6. Step 6: Final answer
    x = 30,586.84

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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.