Home / 61,121.20-91,707.20-56,216.92

Finding the Fourth Proportional to 61,121.20, 91,707.20 and 56,216.92

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Solution

The fourth proportional to 61,121.20, 91,707.20 and 56,216.92 is: 84,348.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,121.20 : 91,707.20 = 56,216.92 : x
  2. Step 2: Convert to fraction form
    61,121.20/91,707.20 = 56,216.92/x
  3. Step 3: Cross multiply
    61,121.20x = 91,707.20 × 56,216.92
  4. Step 4: Simplify right side
    61,121.20x = 5,155,496,325.82
  5. Step 5: Solve for x
    x = 5,155,496,325.82/61,121.20
  6. Step 6: Final answer
    x = 84,348.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.