Home / 90,837.18-125,358.23-56,834.80

Finding the Fourth Proportional to 90,837.18, 125,358.23 and 56,834.80

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Solution

The fourth proportional to 90,837.18, 125,358.23 and 56,834.80 is: 78,433.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,837.18 : 125,358.23 = 56,834.80 : x
  2. Step 2: Convert to fraction form
    90,837.18/125,358.23 = 56,834.80/x
  3. Step 3: Cross multiply
    90,837.18x = 125,358.23 × 56,834.80
  4. Step 4: Simplify right side
    90,837.18x = 7,124,709,759.10
  5. Step 5: Solve for x
    x = 7,124,709,759.10/90,837.18
  6. Step 6: Final answer
    x = 78,433.85

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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.