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Finding the Fourth Proportional to 85,793.34, 128,646.13 and 35,859.81

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Solution

The fourth proportional to 85,793.34, 128,646.13 and 35,859.81 is: 53,771.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,793.34 : 128,646.13 = 35,859.81 : x
  2. Step 2: Convert to fraction form
    85,793.34/128,646.13 = 35,859.81/x
  3. Step 3: Cross multiply
    85,793.34x = 128,646.13 × 35,859.81
  4. Step 4: Simplify right side
    85,793.34x = 4,613,225,689.39
  5. Step 5: Solve for x
    x = 4,613,225,689.39/85,793.34
  6. Step 6: Final answer
    x = 53,771.37

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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.