Home / 56,705.20-85,090.20-39,187.60

Finding the Fourth Proportional to 56,705.20, 85,090.20 and 39,187.60

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Solution

The fourth proportional to 56,705.20, 85,090.20 and 39,187.60 is: 58,803.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,705.20 : 85,090.20 = 39,187.60 : x
  2. Step 2: Convert to fraction form
    56,705.20/85,090.20 = 39,187.60/x
  3. Step 3: Cross multiply
    56,705.20x = 85,090.20 × 39,187.60
  4. Step 4: Simplify right side
    56,705.20x = 3,334,480,721.52
  5. Step 5: Solve for x
    x = 3,334,480,721.52/56,705.20
  6. Step 6: Final answer
    x = 58,803.79

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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.