Home / 85,280.10-117,687.51-47,039.70

Finding the Fourth Proportional to 85,280.10, 117,687.51 and 47,039.70

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Solution

The fourth proportional to 85,280.10, 117,687.51 and 47,039.70 is: 64,915.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,280.10 : 117,687.51 = 47,039.70 : x
  2. Step 2: Convert to fraction form
    85,280.10/117,687.51 = 47,039.70/x
  3. Step 3: Cross multiply
    85,280.10x = 117,687.51 × 47,039.70
  4. Step 4: Simplify right side
    85,280.10x = 5,535,985,164.15
  5. Step 5: Solve for x
    x = 5,535,985,164.15/85,280.10
  6. Step 6: Final answer
    x = 64,915.32

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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.