Home / 81,931.64-113,035.90-47,929.48

Finding the Fourth Proportional to 81,931.64, 113,035.90 and 47,929.48

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Solution

The fourth proportional to 81,931.64, 113,035.90 and 47,929.48 is: 66,125.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,931.64 : 113,035.90 = 47,929.48 : x
  2. Step 2: Convert to fraction form
    81,931.64/113,035.90 = 47,929.48/x
  3. Step 3: Cross multiply
    81,931.64x = 113,035.90 × 47,929.48
  4. Step 4: Simplify right side
    81,931.64x = 5,417,751,908.33
  5. Step 5: Solve for x
    x = 5,417,751,908.33/81,931.64
  6. Step 6: Final answer
    x = 66,125.27

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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.