Home / 64,513.80-96,782.04-20,138.76

Finding the Fourth Proportional to 64,513.80, 96,782.04 and 20,138.76

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Solution

The fourth proportional to 64,513.80, 96,782.04 and 20,138.76 is: 30,211.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,513.80 : 96,782.04 = 20,138.76 : x
  2. Step 2: Convert to fraction form
    64,513.80/96,782.04 = 20,138.76/x
  3. Step 3: Cross multiply
    64,513.80x = 96,782.04 × 20,138.76
  4. Step 4: Simplify right side
    64,513.80x = 1,949,070,275.87
  5. Step 5: Solve for x
    x = 1,949,070,275.87/64,513.80
  6. Step 6: Final answer
    x = 30,211.68

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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.