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Finding the Fourth Proportional to 57,327.80, 85,918.80 and 51,058.40

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Solution

The fourth proportional to 57,327.80, 85,918.80 and 51,058.40 is: 76,522.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,327.80 : 85,918.80 = 51,058.40 : x
  2. Step 2: Convert to fraction form
    57,327.80/85,918.80 = 51,058.40/x
  3. Step 3: Cross multiply
    57,327.80x = 85,918.80 × 51,058.40
  4. Step 4: Simplify right side
    57,327.80x = 4,386,876,457.92
  5. Step 5: Solve for x
    x = 4,386,876,457.92/57,327.80
  6. Step 6: Final answer
    x = 76,522.67

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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.