Home / 56,867.48-78,394.05-39,818

Finding the Fourth Proportional to 56,867.48, 78,394.05 and 39,818

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Solution

The fourth proportional to 56,867.48, 78,394.05 and 39,818 is: 54,890.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,867.48 : 78,394.05 = 39,818 : x
  2. Step 2: Convert to fraction form
    56,867.48/78,394.05 = 39,818/x
  3. Step 3: Cross multiply
    56,867.48x = 78,394.05 × 39,818
  4. Step 4: Simplify right side
    56,867.48x = 3,121,494,282.90
  5. Step 5: Solve for x
    x = 3,121,494,282.90/56,867.48
  6. Step 6: Final answer
    x = 54,890.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.