Home / 90,289.62-124,661.25-56,311.38

Finding the Fourth Proportional to 90,289.62, 124,661.25 and 56,311.38

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Solution

The fourth proportional to 90,289.62, 124,661.25 and 56,311.38 is: 77,748.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,289.62 : 124,661.25 = 56,311.38 : x
  2. Step 2: Convert to fraction form
    90,289.62/124,661.25 = 56,311.38/x
  3. Step 3: Cross multiply
    90,289.62x = 124,661.25 × 56,311.38
  4. Step 4: Simplify right side
    90,289.62x = 7,019,847,020.03
  5. Step 5: Solve for x
    x = 7,019,847,020.03/90,289.62
  6. Step 6: Final answer
    x = 77,748.11

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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.