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Finding the Fourth Proportional to 66,521.58, 99,703.02 and 30,934.86

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Solution

The fourth proportional to 66,521.58, 99,703.02 and 30,934.86 is: 46,365.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,521.58 : 99,703.02 = 30,934.86 : x
  2. Step 2: Convert to fraction form
    66,521.58/99,703.02 = 30,934.86/x
  3. Step 3: Cross multiply
    66,521.58x = 99,703.02 × 30,934.86
  4. Step 4: Simplify right side
    66,521.58x = 3,084,298,965.28
  5. Step 5: Solve for x
    x = 3,084,298,965.28/66,521.58
  6. Step 6: Final answer
    x = 46,365.39

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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.