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Finding the Fourth Proportional to 64,860.34, 89,404.96 and 47,809.96

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Solution

The fourth proportional to 64,860.34, 89,404.96 and 47,809.96 is: 65,902.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,860.34 : 89,404.96 = 47,809.96 : x
  2. Step 2: Convert to fraction form
    64,860.34/89,404.96 = 47,809.96/x
  3. Step 3: Cross multiply
    64,860.34x = 89,404.96 × 47,809.96
  4. Step 4: Simplify right side
    64,860.34x = 4,274,447,561.40
  5. Step 5: Solve for x
    x = 4,274,447,561.40/64,860.34
  6. Step 6: Final answer
    x = 65,902.33

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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.