Home / 81,619.83-112,646.36-45,811.80

Finding the Fourth Proportional to 81,619.83, 112,646.36 and 45,811.80

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Solution

The fourth proportional to 81,619.83, 112,646.36 and 45,811.80 is: 63,226.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,619.83 : 112,646.36 = 45,811.80 : x
  2. Step 2: Convert to fraction form
    81,619.83/112,646.36 = 45,811.80/x
  3. Step 3: Cross multiply
    81,619.83x = 112,646.36 × 45,811.80
  4. Step 4: Simplify right side
    81,619.83x = 5,160,532,285.99
  5. Step 5: Solve for x
    x = 5,160,532,285.99/81,619.83
  6. Step 6: Final answer
    x = 63,226.45

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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.