Home / 66,513.13-99,767.26-19,764.79

Finding the Fourth Proportional to 66,513.13, 99,767.26 and 19,764.79

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Solution

The fourth proportional to 66,513.13, 99,767.26 and 19,764.79 is: 29,646.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,513.13 : 99,767.26 = 19,764.79 : x
  2. Step 2: Convert to fraction form
    66,513.13/99,767.26 = 19,764.79/x
  3. Step 3: Cross multiply
    66,513.13x = 99,767.26 × 19,764.79
  4. Step 4: Simplify right side
    66,513.13x = 1,971,878,718.06
  5. Step 5: Solve for x
    x = 1,971,878,718.06/66,513.13
  6. Step 6: Final answer
    x = 29,646.46

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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.