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Finding the Fourth Proportional to 64,613.72, 96,920.58 and 20,240.63

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Solution

The fourth proportional to 64,613.72, 96,920.58 and 20,240.63 is: 30,360.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,613.72 : 96,920.58 = 20,240.63 : x
  2. Step 2: Convert to fraction form
    64,613.72/96,920.58 = 20,240.63/x
  3. Step 3: Cross multiply
    64,613.72x = 96,920.58 × 20,240.63
  4. Step 4: Simplify right side
    64,613.72x = 1,961,733,599.17
  5. Step 5: Solve for x
    x = 1,961,733,599.17/64,613.72
  6. Step 6: Final answer
    x = 30,360.95

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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.