Home / 81,137.86-111,970.24-45,327.88

Finding the Fourth Proportional to 81,137.86, 111,970.24 and 45,327.88

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Solution

The fourth proportional to 81,137.86, 111,970.24 and 45,327.88 is: 62,552.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,137.86 : 111,970.24 = 45,327.88 : x
  2. Step 2: Convert to fraction form
    81,137.86/111,970.24 = 45,327.88/x
  3. Step 3: Cross multiply
    81,137.86x = 111,970.24 × 45,327.88
  4. Step 4: Simplify right side
    81,137.86x = 5,075,373,602.29
  5. Step 5: Solve for x
    x = 5,075,373,602.29/81,137.86
  6. Step 6: Final answer
    x = 62,552.47

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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.