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Finding the Fourth Proportional to 74,682.68, 103,064.22 and 42,857.24

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Solution

The fourth proportional to 74,682.68, 103,064.22 and 42,857.24 is: 59,144.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,682.68 : 103,064.22 = 42,857.24 : x
  2. Step 2: Convert to fraction form
    74,682.68/103,064.22 = 42,857.24/x
  3. Step 3: Cross multiply
    74,682.68x = 103,064.22 × 42,857.24
  4. Step 4: Simplify right side
    74,682.68x = 4,417,048,011.95
  5. Step 5: Solve for x
    x = 4,417,048,011.95/74,682.68
  6. Step 6: Final answer
    x = 59,144.21

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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.