Home / 72,550.31-100,140.34-43,870.02

Finding the Fourth Proportional to 72,550.31, 100,140.34 and 43,870.02

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Solution

The fourth proportional to 72,550.31, 100,140.34 and 43,870.02 is: 60,553.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,550.31 : 100,140.34 = 43,870.02 : x
  2. Step 2: Convert to fraction form
    72,550.31/100,140.34 = 43,870.02/x
  3. Step 3: Cross multiply
    72,550.31x = 100,140.34 × 43,870.02
  4. Step 4: Simplify right side
    72,550.31x = 4,393,159,028.49
  5. Step 5: Solve for x
    x = 4,393,159,028.49/72,550.31
  6. Step 6: Final answer
    x = 60,553.28

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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.