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Finding the Fourth Proportional to 64,403.80, 96,605.70 and 61,811.80

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Solution

The fourth proportional to 64,403.80, 96,605.70 and 61,811.80 is: 92,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,403.80 : 96,605.70 = 61,811.80 : x
  2. Step 2: Convert to fraction form
    64,403.80/96,605.70 = 61,811.80/x
  3. Step 3: Cross multiply
    64,403.80x = 96,605.70 × 61,811.80
  4. Step 4: Simplify right side
    64,403.80x = 5,971,372,207.26
  5. Step 5: Solve for x
    x = 5,971,372,207.26/64,403.80
  6. Step 6: Final answer
    x = 92,717.70

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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.