Home / 80,507.68-111,116.36-51,417.36

Finding the Fourth Proportional to 80,507.68, 111,116.36 and 51,417.36

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Solution

The fourth proportional to 80,507.68, 111,116.36 and 51,417.36 is: 70,966.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,507.68 : 111,116.36 = 51,417.36 : x
  2. Step 2: Convert to fraction form
    80,507.68/111,116.36 = 51,417.36/x
  3. Step 3: Cross multiply
    80,507.68x = 111,116.36 × 51,417.36
  4. Step 4: Simplify right side
    80,507.68x = 5,713,309,884.01
  5. Step 5: Solve for x
    x = 5,713,309,884.01/80,507.68
  6. Step 6: Final answer
    x = 70,966.02

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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.