Home / 66,637.37-99,971.85-19,889.03

Finding the Fourth Proportional to 66,637.37, 99,971.85 and 19,889.03

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Solution

The fourth proportional to 66,637.37, 99,971.85 and 19,889.03 is: 29,838.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,637.37 : 99,971.85 = 19,889.03 : x
  2. Step 2: Convert to fraction form
    66,637.37/99,971.85 = 19,889.03/x
  3. Step 3: Cross multiply
    66,637.37x = 99,971.85 × 19,889.03
  4. Step 4: Simplify right side
    66,637.37x = 1,988,343,123.81
  5. Step 5: Solve for x
    x = 1,988,343,123.81/66,637.37
  6. Step 6: Final answer
    x = 29,838.26

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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.