Home / 56,999.88-78,583.14-39,981.24

Finding the Fourth Proportional to 56,999.88, 78,583.14 and 39,981.24

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Solution

The fourth proportional to 56,999.88, 78,583.14 and 39,981.24 is: 55,120.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,999.88 : 78,583.14 = 39,981.24 : x
  2. Step 2: Convert to fraction form
    56,999.88/78,583.14 = 39,981.24/x
  3. Step 3: Cross multiply
    56,999.88x = 78,583.14 × 39,981.24
  4. Step 4: Simplify right side
    56,999.88x = 3,141,851,380.29
  5. Step 5: Solve for x
    x = 3,141,851,380.29/56,999.88
  6. Step 6: Final answer
    x = 55,120.32

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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.