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Finding the Fourth Proportional to 77,220.93, 106,768.21 and 67,633.32

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Solution

The fourth proportional to 77,220.93, 106,768.21 and 67,633.32 is: 93,512.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,220.93 : 106,768.21 = 67,633.32 : x
  2. Step 2: Convert to fraction form
    77,220.93/106,768.21 = 67,633.32/x
  3. Step 3: Cross multiply
    77,220.93x = 106,768.21 × 67,633.32
  4. Step 4: Simplify right side
    77,220.93x = 7,221,088,512.76
  5. Step 5: Solve for x
    x = 7,221,088,512.76/77,220.93
  6. Step 6: Final answer
    x = 93,512.06

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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.