Home / 81,332.10-121,899.74-36,914.13

Finding the Fourth Proportional to 81,332.10, 121,899.74 and 36,914.13

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Solution

The fourth proportional to 81,332.10, 121,899.74 and 36,914.13 is: 55,326.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,332.10 : 121,899.74 = 36,914.13 : x
  2. Step 2: Convert to fraction form
    81,332.10/121,899.74 = 36,914.13/x
  3. Step 3: Cross multiply
    81,332.10x = 121,899.74 × 36,914.13
  4. Step 4: Simplify right side
    81,332.10x = 4,499,822,664.76
  5. Step 5: Solve for x
    x = 4,499,822,664.76/81,332.10
  6. Step 6: Final answer
    x = 55,326.53

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1.5x scale

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.