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Finding the Fourth Proportional to 74,509.01, 102,820.41 and 42,249.54

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Solution

The fourth proportional to 74,509.01, 102,820.41 and 42,249.54 is: 58,303.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,509.01 : 102,820.41 = 42,249.54 : x
  2. Step 2: Convert to fraction form
    74,509.01/102,820.41 = 42,249.54/x
  3. Step 3: Cross multiply
    74,509.01x = 102,820.41 × 42,249.54
  4. Step 4: Simplify right side
    74,509.01x = 4,344,115,025.11
  5. Step 5: Solve for x
    x = 4,344,115,025.11/74,509.01
  6. Step 6: Final answer
    x = 58,303.22

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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.