Home / 56,128.88-77,458.02-30,635.48

Finding the Fourth Proportional to 56,128.88, 77,458.02 and 30,635.48

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Solution

The fourth proportional to 56,128.88, 77,458.02 and 30,635.48 is: 42,277.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,128.88 : 77,458.02 = 30,635.48 : x
  2. Step 2: Convert to fraction form
    56,128.88/77,458.02 = 30,635.48/x
  3. Step 3: Cross multiply
    56,128.88x = 77,458.02 × 30,635.48
  4. Step 4: Simplify right side
    56,128.88x = 2,372,963,622.55
  5. Step 5: Solve for x
    x = 2,372,963,622.55/56,128.88
  6. Step 6: Final answer
    x = 42,277.05

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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.