Home / 85,689.54-118,235.06-55,470.66

Finding the Fourth Proportional to 85,689.54, 118,235.06 and 55,470.66

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Solution

The fourth proportional to 85,689.54, 118,235.06 and 55,470.66 is: 76,538.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,689.54 : 118,235.06 = 55,470.66 : x
  2. Step 2: Convert to fraction form
    85,689.54/118,235.06 = 55,470.66/x
  3. Step 3: Cross multiply
    85,689.54x = 118,235.06 × 55,470.66
  4. Step 4: Simplify right side
    85,689.54x = 6,558,576,813.34
  5. Step 5: Solve for x
    x = 6,558,576,813.34/85,689.54
  6. Step 6: Final answer
    x = 76,538.83

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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.