Home / 56,028.72-77,319.36-30,878.28

Finding the Fourth Proportional to 56,028.72, 77,319.36 and 30,878.28

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Solution

The fourth proportional to 56,028.72, 77,319.36 and 30,878.28 is: 42,611.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,028.72 : 77,319.36 = 30,878.28 : x
  2. Step 2: Convert to fraction form
    56,028.72/77,319.36 = 30,878.28/x
  3. Step 3: Cross multiply
    56,028.72x = 77,319.36 × 30,878.28
  4. Step 4: Simplify right side
    56,028.72x = 2,387,488,847.50
  5. Step 5: Solve for x
    x = 2,387,488,847.50/56,028.72
  6. Step 6: Final answer
    x = 42,611.88

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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.