Home / 78,588.16-117,895.20-31,873.12

Finding the Fourth Proportional to 78,588.16, 117,895.20 and 31,873.12

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Solution

The fourth proportional to 78,588.16, 117,895.20 and 31,873.12 is: 47,814.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,588.16 : 117,895.20 = 31,873.12 : x
  2. Step 2: Convert to fraction form
    78,588.16/117,895.20 = 31,873.12/x
  3. Step 3: Cross multiply
    78,588.16x = 117,895.20 × 31,873.12
  4. Step 4: Simplify right side
    78,588.16x = 3,757,687,857.02
  5. Step 5: Solve for x
    x = 3,757,687,857.02/78,588.16
  6. Step 6: Final answer
    x = 47,814.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.