Home / 90,908,005.32-136,362,009.12-21,820,808.70

Finding the Fourth Proportional to 90,908,005.32, 136,362,009.12 and 21,820,808.70

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Solution

The fourth proportional to 90,908,005.32, 136,362,009.12 and 21,820,808.70 is: 32,731,213.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,908,005.32 : 136,362,009.12 = 21,820,808.70 : x
  2. Step 2: Convert to fraction form
    90,908,005.32/136,362,009.12 = 21,820,808.70/x
  3. Step 3: Cross multiply
    90,908,005.32x = 136,362,009.12 × 21,820,808.70
  4. Step 4: Simplify right side
    90,908,005.32x = 2,975,529,314,955,175.50
  5. Step 5: Solve for x
    x = 2,975,529,314,955,175.50/90,908,005.32
  6. Step 6: Final answer
    x = 32,731,213.32

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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.