Home / 42,762.36-64,099.80-21,663.30

Finding the Fourth Proportional to 42,762.36, 64,099.80 and 21,663.30

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Solution

The fourth proportional to 42,762.36, 64,099.80 and 21,663.30 is: 32,472.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,762.36 : 64,099.80 = 21,663.30 : x
  2. Step 2: Convert to fraction form
    42,762.36/64,099.80 = 21,663.30/x
  3. Step 3: Cross multiply
    42,762.36x = 64,099.80 × 21,663.30
  4. Step 4: Simplify right side
    42,762.36x = 1,388,613,197.34
  5. Step 5: Solve for x
    x = 1,388,613,197.34/42,762.36
  6. Step 6: Final answer
    x = 32,472.79

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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.