Home / 81,431.16-112,383.90-45,622.68

Finding the Fourth Proportional to 81,431.16, 112,383.90 and 45,622.68

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Solution

The fourth proportional to 81,431.16, 112,383.90 and 45,622.68 is: 62,964.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,431.16 : 112,383.90 = 45,622.68 : x
  2. Step 2: Convert to fraction form
    81,431.16/112,383.90 = 45,622.68/x
  3. Step 3: Cross multiply
    81,431.16x = 112,383.90 × 45,622.68
  4. Step 4: Simplify right side
    81,431.16x = 5,127,254,706.85
  5. Step 5: Solve for x
    x = 5,127,254,706.85/81,431.16
  6. Step 6: Final answer
    x = 62,964.28

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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.