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Finding the Fourth Proportional to 56,777.54, 85,210.05 and 45,711.34

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Solution

The fourth proportional to 56,777.54, 85,210.05 and 45,711.34 is: 68,602.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,777.54 : 85,210.05 = 45,711.34 : x
  2. Step 2: Convert to fraction form
    56,777.54/85,210.05 = 45,711.34/x
  3. Step 3: Cross multiply
    56,777.54x = 85,210.05 × 45,711.34
  4. Step 4: Simplify right side
    56,777.54x = 3,895,065,566.97
  5. Step 5: Solve for x
    x = 3,895,065,566.97/56,777.54
  6. Step 6: Final answer
    x = 68,602.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.