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Finding the Fourth Proportional to 66,407.86, 99,597.57 and 19,010.22

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Solution

The fourth proportional to 66,407.86, 99,597.57 and 19,010.22 is: 28,511.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,407.86 : 99,597.57 = 19,010.22 : x
  2. Step 2: Convert to fraction form
    66,407.86/99,597.57 = 19,010.22/x
  3. Step 3: Cross multiply
    66,407.86x = 99,597.57 × 19,010.22
  4. Step 4: Simplify right side
    66,407.86x = 1,893,371,622.11
  5. Step 5: Solve for x
    x = 1,893,371,622.11/66,407.86
  6. Step 6: Final answer
    x = 28,511.26

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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.