Home / 85,280.47-117,684.99-47,039.20

Finding the Fourth Proportional to 85,280.47, 117,684.99 and 47,039.20

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Solution

The fourth proportional to 85,280.47, 117,684.99 and 47,039.20 is: 64,912.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,280.47 : 117,684.99 = 47,039.20 : x
  2. Step 2: Convert to fraction form
    85,280.47/117,684.99 = 47,039.20/x
  3. Step 3: Cross multiply
    85,280.47x = 117,684.99 × 47,039.20
  4. Step 4: Simplify right side
    85,280.47x = 5,535,807,781.61
  5. Step 5: Solve for x
    x = 5,535,807,781.61/85,280.47
  6. Step 6: Final answer
    x = 64,912.96

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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.