Home / 81,291.12-112,184.16-45,480.32

Finding the Fourth Proportional to 81,291.12, 112,184.16 and 45,480.32

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Solution

The fourth proportional to 81,291.12, 112,184.16 and 45,480.32 is: 62,764.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,291.12 : 112,184.16 = 45,480.32 : x
  2. Step 2: Convert to fraction form
    81,291.12/112,184.16 = 45,480.32/x
  3. Step 3: Cross multiply
    81,291.12x = 112,184.16 × 45,480.32
  4. Step 4: Simplify right side
    81,291.12x = 5,102,171,495.73
  5. Step 5: Solve for x
    x = 5,102,171,495.73/81,291.12
  6. Step 6: Final answer
    x = 62,764.19

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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.