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Finding the Fourth Proportional to 77,354.58, 106,743.78 and 45,519.15

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Solution

The fourth proportional to 77,354.58, 106,743.78 and 45,519.15 is: 62,813.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,354.58 : 106,743.78 = 45,519.15 : x
  2. Step 2: Convert to fraction form
    77,354.58/106,743.78 = 45,519.15/x
  3. Step 3: Cross multiply
    77,354.58x = 106,743.78 × 45,519.15
  4. Step 4: Simplify right side
    77,354.58x = 4,858,886,133.39
  5. Step 5: Solve for x
    x = 4,858,886,133.39/77,354.58
  6. Step 6: Final answer
    x = 62,813.17

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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.