Home / 56,319.05-77,720.51-31,168.55

Finding the Fourth Proportional to 56,319.05, 77,720.51 and 31,168.55

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Solution

The fourth proportional to 56,319.05, 77,720.51 and 31,168.55 is: 43,012.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,319.05 : 77,720.51 = 31,168.55 : x
  2. Step 2: Convert to fraction form
    56,319.05/77,720.51 = 31,168.55/x
  3. Step 3: Cross multiply
    56,319.05x = 77,720.51 × 31,168.55
  4. Step 4: Simplify right side
    56,319.05x = 2,422,435,437.01
  5. Step 5: Solve for x
    x = 2,422,435,437.01/56,319.05
  6. Step 6: Final answer
    x = 43,012.72

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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.