Home / 81,937,211.40-122,905,817.10-21,352,937.40

Finding the Fourth Proportional to 81,937,211.40, 122,905,817.10 and 21,352,937.40

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Solution

The fourth proportional to 81,937,211.40, 122,905,817.10 and 21,352,937.40 is: 32,029,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,937,211.40 : 122,905,817.10 = 21,352,937.40 : x
  2. Step 2: Convert to fraction form
    81,937,211.40/122,905,817.10 = 21,352,937.40/x
  3. Step 3: Cross multiply
    81,937,211.40x = 122,905,817.10 × 21,352,937.40
  4. Step 4: Simplify right side
    81,937,211.40x = 2,624,400,218,632,149
  5. Step 5: Solve for x
    x = 2,624,400,218,632,149/81,937,211.40
  6. Step 6: Final answer
    x = 32,029,406.10

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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.