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Finding the Fourth Proportional to 85,671.66, 118,280.55 and 55,057.17

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Solution

The fourth proportional to 85,671.66, 118,280.55 and 55,057.17 is: 76,013.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,671.66 : 118,280.55 = 55,057.17 : x
  2. Step 2: Convert to fraction form
    85,671.66/118,280.55 = 55,057.17/x
  3. Step 3: Cross multiply
    85,671.66x = 118,280.55 × 55,057.17
  4. Step 4: Simplify right side
    85,671.66x = 6,512,192,349.04
  5. Step 5: Solve for x
    x = 6,512,192,349.04/85,671.66
  6. Step 6: Final answer
    x = 76,013.38

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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.