Home / 57,077.74-78,761.90-38,643.34

Finding the Fourth Proportional to 57,077.74, 78,761.90 and 38,643.34

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Solution

The fourth proportional to 57,077.74, 78,761.90 and 38,643.34 is: 53,324.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,077.74 : 78,761.90 = 38,643.34 : x
  2. Step 2: Convert to fraction form
    57,077.74/78,761.90 = 38,643.34/x
  3. Step 3: Cross multiply
    57,077.74x = 78,761.90 × 38,643.34
  4. Step 4: Simplify right side
    57,077.74x = 3,043,622,880.75
  5. Step 5: Solve for x
    x = 3,043,622,880.75/57,077.74
  6. Step 6: Final answer
    x = 53,324.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.