Home / 85,604.16-118,138.32-47,871.84

Finding the Fourth Proportional to 85,604.16, 118,138.32 and 47,871.84

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Solution

The fourth proportional to 85,604.16, 118,138.32 and 47,871.84 is: 66,065.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,604.16 : 118,138.32 = 47,871.84 : x
  2. Step 2: Convert to fraction form
    85,604.16/118,138.32 = 47,871.84/x
  3. Step 3: Cross multiply
    85,604.16x = 118,138.32 × 47,871.84
  4. Step 4: Simplify right side
    85,604.16x = 5,655,498,752.91
  5. Step 5: Solve for x
    x = 5,655,498,752.91/85,604.16
  6. Step 6: Final answer
    x = 66,065.70

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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.