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Finding the Fourth Proportional to 94,018, 129,748.68 and 54,274

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Solution

The fourth proportional to 94,018, 129,748.68 and 54,274 is: 74,900.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,018 : 129,748.68 = 54,274 : x
  2. Step 2: Convert to fraction form
    94,018/129,748.68 = 54,274/x
  3. Step 3: Cross multiply
    94,018x = 129,748.68 × 54,274
  4. Step 4: Simplify right side
    94,018x = 7,041,979,858.32
  5. Step 5: Solve for x
    x = 7,041,979,858.32/94,018
  6. Step 6: Final answer
    x = 74,900.34

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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.