Home / 87,782.81-121,139.38-47,495.67

Finding the Fourth Proportional to 87,782.81, 121,139.38 and 47,495.67

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Solution

The fourth proportional to 87,782.81, 121,139.38 and 47,495.67 is: 65,543.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,782.81 : 121,139.38 = 47,495.67 : x
  2. Step 2: Convert to fraction form
    87,782.81/121,139.38 = 47,495.67/x
  3. Step 3: Cross multiply
    87,782.81x = 121,139.38 × 47,495.67
  4. Step 4: Simplify right side
    87,782.81x = 5,753,595,621.58
  5. Step 5: Solve for x
    x = 5,753,595,621.58/87,782.81
  6. Step 6: Final answer
    x = 65,543.54

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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.