Home / 85,340.42-128,010.70-29,180.95

Finding the Fourth Proportional to 85,340.42, 128,010.70 and 29,180.95

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Solution

The fourth proportional to 85,340.42, 128,010.70 and 29,180.95 is: 43,771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,340.42 : 128,010.70 = 29,180.95 : x
  2. Step 2: Convert to fraction form
    85,340.42/128,010.70 = 29,180.95/x
  3. Step 3: Cross multiply
    85,340.42x = 128,010.70 × 29,180.95
  4. Step 4: Simplify right side
    85,340.42x = 3,735,474,010.29
  5. Step 5: Solve for x
    x = 3,735,474,010.29/85,340.42
  6. Step 6: Final answer
    x = 43,771.45

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1.5x scale

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.