Home / 85,687.20-118,247.04-47,962.80

Finding the Fourth Proportional to 85,687.20, 118,247.04 and 47,962.80

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Solution

The fourth proportional to 85,687.20, 118,247.04 and 47,962.80 is: 66,187.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,687.20 : 118,247.04 = 47,962.80 : x
  2. Step 2: Convert to fraction form
    85,687.20/118,247.04 = 47,962.80/x
  3. Step 3: Cross multiply
    85,687.20x = 118,247.04 × 47,962.80
  4. Step 4: Simplify right side
    85,687.20x = 5,671,459,130.11
  5. Step 5: Solve for x
    x = 5,671,459,130.11/85,687.20
  6. Step 6: Final answer
    x = 66,187.94

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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.