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Finding the Fourth Proportional to 66,355.80, 99,290.70 and 48,859.80

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Solution

The fourth proportional to 66,355.80, 99,290.70 and 48,859.80 is: 73,110.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,355.80 : 99,290.70 = 48,859.80 : x
  2. Step 2: Convert to fraction form
    66,355.80/99,290.70 = 48,859.80/x
  3. Step 3: Cross multiply
    66,355.80x = 99,290.70 × 48,859.80
  4. Step 4: Simplify right side
    66,355.80x = 4,851,323,743.86
  5. Step 5: Solve for x
    x = 4,851,323,743.86/66,355.80
  6. Step 6: Final answer
    x = 73,110.77

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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.