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Finding the Fourth Proportional to 74,047.34, 102,143.80 and 45,380.89

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Solution

The fourth proportional to 74,047.34, 102,143.80 and 45,380.89 is: 62,600.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,047.34 : 102,143.80 = 45,380.89 : x
  2. Step 2: Convert to fraction form
    74,047.34/102,143.80 = 45,380.89/x
  3. Step 3: Cross multiply
    74,047.34x = 102,143.80 × 45,380.89
  4. Step 4: Simplify right side
    74,047.34x = 4,635,375,814.36
  5. Step 5: Solve for x
    x = 4,635,375,814.36/74,047.34
  6. Step 6: Final answer
    x = 62,600.17

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1.5x scale

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.