Home / 81,487.44-112,242.32-57,572.60

Finding the Fourth Proportional to 81,487.44, 112,242.32 and 57,572.60

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Solution

The fourth proportional to 81,487.44, 112,242.32 and 57,572.60 is: 79,301.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,487.44 : 112,242.32 = 57,572.60 : x
  2. Step 2: Convert to fraction form
    81,487.44/112,242.32 = 57,572.60/x
  3. Step 3: Cross multiply
    81,487.44x = 112,242.32 × 57,572.60
  4. Step 4: Simplify right side
    81,487.44x = 6,462,082,192.43
  5. Step 5: Solve for x
    x = 6,462,082,192.43/81,487.44
  6. Step 6: Final answer
    x = 79,301.57

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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.