Home / 66,637.40-99,973.40-19,890.28

Finding the Fourth Proportional to 66,637.40, 99,973.40 and 19,890.28

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Solution

The fourth proportional to 66,637.40, 99,973.40 and 19,890.28 is: 29,840.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,637.40 : 99,973.40 = 19,890.28 : x
  2. Step 2: Convert to fraction form
    66,637.40/99,973.40 = 19,890.28/x
  3. Step 3: Cross multiply
    66,637.40x = 99,973.40 × 19,890.28
  4. Step 4: Simplify right side
    66,637.40x = 1,988,498,918.55
  5. Step 5: Solve for x
    x = 1,988,498,918.55/66,637.40
  6. Step 6: Final answer
    x = 29,840.58

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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.