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Finding the Fourth Proportional to 74,655.76, 103,007.28 and 42,383.38

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Solution

The fourth proportional to 74,655.76, 103,007.28 and 42,383.38 is: 58,479.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,655.76 : 103,007.28 = 42,383.38 : x
  2. Step 2: Convert to fraction form
    74,655.76/103,007.28 = 42,383.38/x
  3. Step 3: Cross multiply
    74,655.76x = 103,007.28 × 42,383.38
  4. Step 4: Simplify right side
    74,655.76x = 4,365,796,691.01
  5. Step 5: Solve for x
    x = 4,365,796,691.01/74,655.76
  6. Step 6: Final answer
    x = 58,479.03

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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.