Home / 90,908,012.32-136,362,019.62-21,820,815.70

Finding the Fourth Proportional to 90,908,012.32, 136,362,019.62 and 21,820,815.70

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Solution

The fourth proportional to 90,908,012.32, 136,362,019.62 and 21,820,815.70 is: 32,731,223.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,908,012.32 : 136,362,019.62 = 21,820,815.70 : x
  2. Step 2: Convert to fraction form
    90,908,012.32/136,362,019.62 = 21,820,815.70/x
  3. Step 3: Cross multiply
    90,908,012.32x = 136,362,019.62 × 21,820,815.70
  4. Step 4: Simplify right side
    90,908,012.32x = 2,975,530,498,607,804
  5. Step 5: Solve for x
    x = 2,975,530,498,607,804/90,908,012.32
  6. Step 6: Final answer
    x = 32,731,223.82

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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.