Home / 81,289.31-112,141.36-52,618.20

Finding the Fourth Proportional to 81,289.31, 112,141.36 and 52,618.20

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Solution

The fourth proportional to 81,289.31, 112,141.36 and 52,618.20 is: 72,588.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,289.31 : 112,141.36 = 52,618.20 : x
  2. Step 2: Convert to fraction form
    81,289.31/112,141.36 = 52,618.20/x
  3. Step 3: Cross multiply
    81,289.31x = 112,141.36 × 52,618.20
  4. Step 4: Simplify right side
    81,289.31x = 5,900,676,377.21
  5. Step 5: Solve for x
    x = 5,900,676,377.21/81,289.31
  6. Step 6: Final answer
    x = 72,588.59

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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.