Home / 81,530.56-112,506.88-45,720.32

Finding the Fourth Proportional to 81,530.56, 112,506.88 and 45,720.32

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Solution

The fourth proportional to 81,530.56, 112,506.88 and 45,720.32 is: 63,091.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,530.56 : 112,506.88 = 45,720.32 : x
  2. Step 2: Convert to fraction form
    81,530.56/112,506.88 = 45,720.32/x
  3. Step 3: Cross multiply
    81,530.56x = 112,506.88 × 45,720.32
  4. Step 4: Simplify right side
    81,530.56x = 5,143,850,555.80
  5. Step 5: Solve for x
    x = 5,143,850,555.80/81,530.56
  6. Step 6: Final answer
    x = 63,091.07

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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.