Home / 92,685.20-138,944.57-42,739.79

Finding the Fourth Proportional to 92,685.20, 138,944.57 and 42,739.79

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Solution

The fourth proportional to 92,685.20, 138,944.57 and 42,739.79 is: 64,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,685.20 : 138,944.57 = 42,739.79 : x
  2. Step 2: Convert to fraction form
    92,685.20/138,944.57 = 42,739.79/x
  3. Step 3: Cross multiply
    92,685.20x = 138,944.57 × 42,739.79
  4. Step 4: Simplify right side
    92,685.20x = 5,938,460,835.02
  5. Step 5: Solve for x
    x = 5,938,460,835.02/92,685.20
  6. Step 6: Final answer
    x = 64,071.30

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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.