Home / 85,717.02-118,288.71-47,991.90

Finding the Fourth Proportional to 85,717.02, 118,288.71 and 47,991.90

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Solution

The fourth proportional to 85,717.02, 118,288.71 and 47,991.90 is: 66,228.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,717.02 : 118,288.71 = 47,991.90 : x
  2. Step 2: Convert to fraction form
    85,717.02/118,288.71 = 47,991.90/x
  3. Step 3: Cross multiply
    85,717.02x = 118,288.71 × 47,991.90
  4. Step 4: Simplify right side
    85,717.02x = 5,676,899,941.45
  5. Step 5: Solve for x
    x = 5,676,899,941.45/85,717.02
  6. Step 6: Final answer
    x = 66,228.39

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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.