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Finding the Fourth Proportional to 77,751.84, 107,301.12 and 45,920.88

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Solution

The fourth proportional to 77,751.84, 107,301.12 and 45,920.88 is: 63,372.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,751.84 : 107,301.12 = 45,920.88 : x
  2. Step 2: Convert to fraction form
    77,751.84/107,301.12 = 45,920.88/x
  3. Step 3: Cross multiply
    77,751.84x = 107,301.12 × 45,920.88
  4. Step 4: Simplify right side
    77,751.84x = 4,927,361,855.39
  5. Step 5: Solve for x
    x = 4,927,361,855.39/77,751.84
  6. Step 6: Final answer
    x = 63,372.93

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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.