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Finding the Fourth Proportional to 60,613.40, 90,903.90 and 21,166.40

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Solution

The fourth proportional to 60,613.40, 90,903.90 and 21,166.40 is: 31,743.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,613.40 : 90,903.90 = 21,166.40 : x
  2. Step 2: Convert to fraction form
    60,613.40/90,903.90 = 21,166.40/x
  3. Step 3: Cross multiply
    60,613.40x = 90,903.90 × 21,166.40
  4. Step 4: Simplify right side
    60,613.40x = 1,924,108,308.96
  5. Step 5: Solve for x
    x = 1,924,108,308.96/60,613.40
  6. Step 6: Final answer
    x = 31,743.94

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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.