Home / 81,080.58-121,423.23-45,913.62

Finding the Fourth Proportional to 81,080.58, 121,423.23 and 45,913.62

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Solution

The fourth proportional to 81,080.58, 121,423.23 and 45,913.62 is: 68,758.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,080.58 : 121,423.23 = 45,913.62 : x
  2. Step 2: Convert to fraction form
    81,080.58/121,423.23 = 45,913.62/x
  3. Step 3: Cross multiply
    81,080.58x = 121,423.23 × 45,913.62
  4. Step 4: Simplify right side
    81,080.58x = 5,574,980,041.39
  5. Step 5: Solve for x
    x = 5,574,980,041.39/81,080.58
  6. Step 6: Final answer
    x = 68,758.51

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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.