Home / 69,438.66-104,117.89-61,135.35

Finding the Fourth Proportional to 69,438.66, 104,117.89 and 61,135.35

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Solution

The fourth proportional to 69,438.66, 104,117.89 and 61,135.35 is: 91,667.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,438.66 : 104,117.89 = 61,135.35 : x
  2. Step 2: Convert to fraction form
    69,438.66/104,117.89 = 61,135.35/x
  3. Step 3: Cross multiply
    69,438.66x = 104,117.89 × 61,135.35
  4. Step 4: Simplify right side
    69,438.66x = 6,365,283,646.41
  5. Step 5: Solve for x
    x = 6,365,283,646.41/69,438.66
  6. Step 6: Final answer
    x = 91,667.72

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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.