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Finding the Fourth Proportional to 76,553.55, 105,649.81 and 45,927.79

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Solution

The fourth proportional to 76,553.55, 105,649.81 and 45,927.79 is: 63,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,553.55 : 105,649.81 = 45,927.79 : x
  2. Step 2: Convert to fraction form
    76,553.55/105,649.81 = 45,927.79/x
  3. Step 3: Cross multiply
    76,553.55x = 105,649.81 × 45,927.79
  4. Step 4: Simplify right side
    76,553.55x = 4,852,262,304.46
  5. Step 5: Solve for x
    x = 4,852,262,304.46/76,553.55
  6. Step 6: Final answer
    x = 63,383.90

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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.