Home / 85,541.37-128,329.13-26,374.78

Finding the Fourth Proportional to 85,541.37, 128,329.13 and 26,374.78

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Solution

The fourth proportional to 85,541.37, 128,329.13 and 26,374.78 is: 39,567.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,541.37 : 128,329.13 = 26,374.78 : x
  2. Step 2: Convert to fraction form
    85,541.37/128,329.13 = 26,374.78/x
  3. Step 3: Cross multiply
    85,541.37x = 128,329.13 × 26,374.78
  4. Step 4: Simplify right side
    85,541.37x = 3,384,652,571.34
  5. Step 5: Solve for x
    x = 3,384,652,571.34/85,541.37
  6. Step 6: Final answer
    x = 39,567.43

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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.