Home / 57,072.36-78,770.64-38,242.20

Finding the Fourth Proportional to 57,072.36, 78,770.64 and 38,242.20

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Solution

The fourth proportional to 57,072.36, 78,770.64 and 38,242.20 is: 52,781.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,072.36 : 78,770.64 = 38,242.20 : x
  2. Step 2: Convert to fraction form
    57,072.36/78,770.64 = 38,242.20/x
  3. Step 3: Cross multiply
    57,072.36x = 78,770.64 × 38,242.20
  4. Step 4: Simplify right side
    57,072.36x = 3,012,362,569.01
  5. Step 5: Solve for x
    x = 3,012,362,569.01/57,072.36
  6. Step 6: Final answer
    x = 52,781.46

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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.