Home / 81,385.16-112,313.99-45,576.68

Finding the Fourth Proportional to 81,385.16, 112,313.99 and 45,576.68

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Solution

The fourth proportional to 81,385.16, 112,313.99 and 45,576.68 is: 62,897.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,385.16 : 112,313.99 = 45,576.68 : x
  2. Step 2: Convert to fraction form
    81,385.16/112,313.99 = 45,576.68/x
  3. Step 3: Cross multiply
    81,385.16x = 112,313.99 × 45,576.68
  4. Step 4: Simplify right side
    81,385.16x = 5,118,898,334.12
  5. Step 5: Solve for x
    x = 5,118,898,334.12/81,385.16
  6. Step 6: Final answer
    x = 62,897.20

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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.