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Finding the Fourth Proportional to 123,622.81, 185,448.69 and 39,353.45

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Solution

The fourth proportional to 123,622.81, 185,448.69 and 39,353.45 is: 59,034.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,622.81 : 185,448.69 = 39,353.45 : x
  2. Step 2: Convert to fraction form
    123,622.81/185,448.69 = 39,353.45/x
  3. Step 3: Cross multiply
    123,622.81x = 185,448.69 × 39,353.45
  4. Step 4: Simplify right side
    123,622.81x = 7,298,044,822.24
  5. Step 5: Solve for x
    x = 7,298,044,822.24/123,622.81
  6. Step 6: Final answer
    x = 59,034.78

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1.5x scale

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.