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Finding the Fourth Proportional to 97,066.88, 133,940 and 56,772.72

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Solution

The fourth proportional to 97,066.88, 133,940 and 56,772.72 is: 78,339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,066.88 : 133,940 = 56,772.72 : x
  2. Step 2: Convert to fraction form
    97,066.88/133,940 = 56,772.72/x
  3. Step 3: Cross multiply
    97,066.88x = 133,940 × 56,772.72
  4. Step 4: Simplify right side
    97,066.88x = 7,604,138,116.80
  5. Step 5: Solve for x
    x = 7,604,138,116.80/97,066.88
  6. Step 6: Final answer
    x = 78,339.16

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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.