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Finding the Fourth Proportional to 69,927.88, 96,605.93 and 56,475.79

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Solution

The fourth proportional to 69,927.88, 96,605.93 and 56,475.79 is: 78,021.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,927.88 : 96,605.93 = 56,475.79 : x
  2. Step 2: Convert to fraction form
    69,927.88/96,605.93 = 56,475.79/x
  3. Step 3: Cross multiply
    69,927.88x = 96,605.93 × 56,475.79
  4. Step 4: Simplify right side
    69,927.88x = 5,455,896,115.11
  5. Step 5: Solve for x
    x = 5,455,896,115.11/69,927.88
  6. Step 6: Final answer
    x = 78,021.76

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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.