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Finding the Fourth Proportional to 97,012.04, 133,762.08 and 66,399.88

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Solution

The fourth proportional to 97,012.04, 133,762.08 and 66,399.88 is: 91,553.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,012.04 : 133,762.08 = 66,399.88 : x
  2. Step 2: Convert to fraction form
    97,012.04/133,762.08 = 66,399.88/x
  3. Step 3: Cross multiply
    97,012.04x = 133,762.08 × 66,399.88
  4. Step 4: Simplify right side
    97,012.04x = 8,881,786,060.55
  5. Step 5: Solve for x
    x = 8,881,786,060.55/97,012.04
  6. Step 6: Final answer
    x = 91,553.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.