Home / 90,684,406.62-125,139,759.18-51,520,747.86

Finding the Fourth Proportional to 90,684,406.62, 125,139,759.18 and 51,520,747.86

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Solution

The fourth proportional to 90,684,406.62, 125,139,759.18 and 51,520,747.86 is: 71,095,949.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,684,406.62 : 125,139,759.18 = 51,520,747.86 : x
  2. Step 2: Convert to fraction form
    90,684,406.62/125,139,759.18 = 51,520,747.86/x
  3. Step 3: Cross multiply
    90,684,406.62x = 125,139,759.18 × 51,520,747.86
  4. Step 4: Simplify right side
    90,684,406.62x = 6,447,293,979,973,901
  5. Step 5: Solve for x
    x = 6,447,293,979,973,901/90,684,406.62
  6. Step 6: Final answer
    x = 71,095,949.35

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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.