Home / 81,739.55-112,803.90-45,929.45

Finding the Fourth Proportional to 81,739.55, 112,803.90 and 45,929.45

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Solution

The fourth proportional to 81,739.55, 112,803.90 and 45,929.45 is: 63,384.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,739.55 : 112,803.90 = 45,929.45 : x
  2. Step 2: Convert to fraction form
    81,739.55/112,803.90 = 45,929.45/x
  3. Step 3: Cross multiply
    81,739.55x = 112,803.90 × 45,929.45
  4. Step 4: Simplify right side
    81,739.55x = 5,181,021,084.86
  5. Step 5: Solve for x
    x = 5,181,021,084.86/81,739.55
  6. Step 6: Final answer
    x = 63,384.51

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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.