Home / 72,028.31-99,399.43-39,762.35

Finding the Fourth Proportional to 72,028.31, 99,399.43 and 39,762.35

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Solution

The fourth proportional to 72,028.31, 99,399.43 and 39,762.35 is: 54,872.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,028.31 : 99,399.43 = 39,762.35 : x
  2. Step 2: Convert to fraction form
    72,028.31/99,399.43 = 39,762.35/x
  3. Step 3: Cross multiply
    72,028.31x = 99,399.43 × 39,762.35
  4. Step 4: Simplify right side
    72,028.31x = 3,952,354,850.91
  5. Step 5: Solve for x
    x = 3,952,354,850.91/72,028.31
  6. Step 6: Final answer
    x = 54,872.25

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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.