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Finding the Fourth Proportional to 77,074.56, 106,358.94 and 45,251.28

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Solution

The fourth proportional to 77,074.56, 106,358.94 and 45,251.28 is: 62,444.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,074.56 : 106,358.94 = 45,251.28 : x
  2. Step 2: Convert to fraction form
    77,074.56/106,358.94 = 45,251.28/x
  3. Step 3: Cross multiply
    77,074.56x = 106,358.94 × 45,251.28
  4. Step 4: Simplify right side
    77,074.56x = 4,812,878,174.44
  5. Step 5: Solve for x
    x = 4,812,878,174.44/77,074.56
  6. Step 6: Final answer
    x = 62,444.45

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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.