Home / 57,145.07-78,860.11-31,994.57

Finding the Fourth Proportional to 57,145.07, 78,860.11 and 31,994.57

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Solution

The fourth proportional to 57,145.07, 78,860.11 and 31,994.57 is: 44,152.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,145.07 : 78,860.11 = 31,994.57 : x
  2. Step 2: Convert to fraction form
    57,145.07/78,860.11 = 31,994.57/x
  3. Step 3: Cross multiply
    57,145.07x = 78,860.11 × 31,994.57
  4. Step 4: Simplify right side
    57,145.07x = 2,523,095,309.60
  5. Step 5: Solve for x
    x = 2,523,095,309.60/57,145.07
  6. Step 6: Final answer
    x = 44,152.46

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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.