Home / 77,999.13-117,013.27-31,255.65

Finding the Fourth Proportional to 77,999.13, 117,013.27 and 31,255.65

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Solution

The fourth proportional to 77,999.13, 117,013.27 and 31,255.65 is: 46,889.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,999.13 : 117,013.27 = 31,255.65 : x
  2. Step 2: Convert to fraction form
    77,999.13/117,013.27 = 31,255.65/x
  3. Step 3: Cross multiply
    77,999.13x = 117,013.27 × 31,255.65
  4. Step 4: Simplify right side
    77,999.13x = 3,657,325,812.48
  5. Step 5: Solve for x
    x = 3,657,325,812.48/77,999.13
  6. Step 6: Final answer
    x = 46,889.32

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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.