Home / 81,281.36-112,163-45,465.24

Finding the Fourth Proportional to 81,281.36, 112,163 and 45,465.24

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Solution

The fourth proportional to 81,281.36, 112,163 and 45,465.24 is: 62,739.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,281.36 : 112,163 = 45,465.24 : x
  2. Step 2: Convert to fraction form
    81,281.36/112,163 = 45,465.24/x
  3. Step 3: Cross multiply
    81,281.36x = 112,163 × 45,465.24
  4. Step 4: Simplify right side
    81,281.36x = 5,099,517,714.12
  5. Step 5: Solve for x
    x = 5,099,517,714.12/81,281.36
  6. Step 6: Final answer
    x = 62,739.08

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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.