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Finding the Fourth Proportional to 85,076.50, 117,555.81 and 67,312.59

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Solution

The fourth proportional to 85,076.50, 117,555.81 and 67,312.59 is: 93,010.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,076.50 : 117,555.81 = 67,312.59 : x
  2. Step 2: Convert to fraction form
    85,076.50/117,555.81 = 67,312.59/x
  3. Step 3: Cross multiply
    85,076.50x = 117,555.81 × 67,312.59
  4. Step 4: Simplify right side
    85,076.50x = 7,912,986,040.65
  5. Step 5: Solve for x
    x = 7,912,986,040.65/85,076.50
  6. Step 6: Final answer
    x = 93,010.25

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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.