Home / 31,490,143.80-47,235,215.70-13,314,861.60

Finding the Fourth Proportional to 31,490,143.80, 47,235,215.70 and 13,314,861.60

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Solution

The fourth proportional to 31,490,143.80, 47,235,215.70 and 13,314,861.60 is: 19,972,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,490,143.80 : 47,235,215.70 = 13,314,861.60 : x
  2. Step 2: Convert to fraction form
    31,490,143.80/47,235,215.70 = 13,314,861.60/x
  3. Step 3: Cross multiply
    31,490,143.80x = 47,235,215.70 × 13,314,861.60
  4. Step 4: Simplify right side
    31,490,143.80x = 628,930,359,691,647.12
  5. Step 5: Solve for x
    x = 628,930,359,691,647.12/31,490,143.80
  6. Step 6: Final answer
    x = 19,972,292.40

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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.