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Finding the Fourth Proportional to 40,783.68, 61,123.68 and 18,609.12

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Solution

The fourth proportional to 40,783.68, 61,123.68 and 18,609.12 is: 27,890.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,783.68 : 61,123.68 = 18,609.12 : x
  2. Step 2: Convert to fraction form
    40,783.68/61,123.68 = 18,609.12/x
  3. Step 3: Cross multiply
    40,783.68x = 61,123.68 × 18,609.12
  4. Step 4: Simplify right side
    40,783.68x = 1,137,457,895.96
  5. Step 5: Solve for x
    x = 1,137,457,895.96/40,783.68
  6. Step 6: Final answer
    x = 27,890.03

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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.