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Finding the Fourth Proportional to 77,401.80, 106,813.30 and 43,410.28

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Solution

The fourth proportional to 77,401.80, 106,813.30 and 43,410.28 is: 59,905.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,401.80 : 106,813.30 = 43,410.28 : x
  2. Step 2: Convert to fraction form
    77,401.80/106,813.30 = 43,410.28/x
  3. Step 3: Cross multiply
    77,401.80x = 106,813.30 × 43,410.28
  4. Step 4: Simplify right side
    77,401.80x = 4,636,795,260.72
  5. Step 5: Solve for x
    x = 4,636,795,260.72/77,401.80
  6. Step 6: Final answer
    x = 59,905.52

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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.