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Finding the Fourth Proportional to 84,226.60, 126,048.30 and 77,228.20

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Solution

The fourth proportional to 84,226.60, 126,048.30 and 77,228.20 is: 115,574.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,226.60 : 126,048.30 = 77,228.20 : x
  2. Step 2: Convert to fraction form
    84,226.60/126,048.30 = 77,228.20/x
  3. Step 3: Cross multiply
    84,226.60x = 126,048.30 × 77,228.20
  4. Step 4: Simplify right side
    84,226.60x = 9,734,483,322.06
  5. Step 5: Solve for x
    x = 9,734,483,322.06/84,226.60
  6. Step 6: Final answer
    x = 115,574.93

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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.