Home / 66,317.50-99,479-19,570.38

Finding the Fourth Proportional to 66,317.50, 99,479 and 19,570.38

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Solution

The fourth proportional to 66,317.50, 99,479 and 19,570.38 is: 29,356.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,317.50 : 99,479 = 19,570.38 : x
  2. Step 2: Convert to fraction form
    66,317.50/99,479 = 19,570.38/x
  3. Step 3: Cross multiply
    66,317.50x = 99,479 × 19,570.38
  4. Step 4: Simplify right side
    66,317.50x = 1,946,841,832.02
  5. Step 5: Solve for x
    x = 1,946,841,832.02/66,317.50
  6. Step 6: Final answer
    x = 29,356.38

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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.