Home / 66,215.51-99,312.63-18,172.89

Finding the Fourth Proportional to 66,215.51, 99,312.63 and 18,172.89

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Solution

The fourth proportional to 66,215.51, 99,312.63 and 18,172.89 is: 27,256.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,215.51 : 99,312.63 = 18,172.89 : x
  2. Step 2: Convert to fraction form
    66,215.51/99,312.63 = 18,172.89/x
  3. Step 3: Cross multiply
    66,215.51x = 99,312.63 × 18,172.89
  4. Step 4: Simplify right side
    66,215.51x = 1,804,797,500.60
  5. Step 5: Solve for x
    x = 1,804,797,500.60/66,215.51
  6. Step 6: Final answer
    x = 27,256.42

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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.