Home / 81,026.91-121,541.58-36,655.11

Finding the Fourth Proportional to 81,026.91, 121,541.58 and 36,655.11

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Solution

The fourth proportional to 81,026.91, 121,541.58 and 36,655.11 is: 54,983.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,026.91 : 121,541.58 = 36,655.11 : x
  2. Step 2: Convert to fraction form
    81,026.91/121,541.58 = 36,655.11/x
  3. Step 3: Cross multiply
    81,026.91x = 121,541.58 × 36,655.11
  4. Step 4: Simplify right side
    81,026.91x = 4,455,119,984.47
  5. Step 5: Solve for x
    x = 4,455,119,984.47/81,026.91
  6. Step 6: Final answer
    x = 54,983.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.