Home / 81,230.32-112,090.20-45,415.36

Finding the Fourth Proportional to 81,230.32, 112,090.20 and 45,415.36

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Solution

The fourth proportional to 81,230.32, 112,090.20 and 45,415.36 is: 62,668.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,230.32 : 112,090.20 = 45,415.36 : x
  2. Step 2: Convert to fraction form
    81,230.32/112,090.20 = 45,415.36/x
  3. Step 3: Cross multiply
    81,230.32x = 112,090.20 × 45,415.36
  4. Step 4: Simplify right side
    81,230.32x = 5,090,616,785.47
  5. Step 5: Solve for x
    x = 5,090,616,785.47/81,230.32
  6. Step 6: Final answer
    x = 62,668.92

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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.