Home / 85,131.02-127,740.28-37,778.56

Finding the Fourth Proportional to 85,131.02, 127,740.28 and 37,778.56

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Solution

The fourth proportional to 85,131.02, 127,740.28 and 37,778.56 is: 56,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,131.02 : 127,740.28 = 37,778.56 : x
  2. Step 2: Convert to fraction form
    85,131.02/127,740.28 = 37,778.56/x
  3. Step 3: Cross multiply
    85,131.02x = 127,740.28 × 37,778.56
  4. Step 4: Simplify right side
    85,131.02x = 4,825,843,832.40
  5. Step 5: Solve for x
    x = 4,825,843,832.40/85,131.02
  6. Step 6: Final answer
    x = 56,687.25

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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.