Home / 90,162.78-124,408.86-56,160.48

Finding the Fourth Proportional to 90,162.78, 124,408.86 and 56,160.48

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Solution

The fourth proportional to 90,162.78, 124,408.86 and 56,160.48 is: 77,491.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,162.78 : 124,408.86 = 56,160.48 : x
  2. Step 2: Convert to fraction form
    90,162.78/124,408.86 = 56,160.48/x
  3. Step 3: Cross multiply
    90,162.78x = 124,408.86 × 56,160.48
  4. Step 4: Simplify right side
    90,162.78x = 6,986,861,293.85
  5. Step 5: Solve for x
    x = 6,986,861,293.85/90,162.78
  6. Step 6: Final answer
    x = 77,491.64

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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.