Home / 47,921,279.80-71,881,919.70-19,188,036.40

Finding the Fourth Proportional to 47,921,279.80, 71,881,919.70 and 19,188,036.40

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Solution

The fourth proportional to 47,921,279.80, 71,881,919.70 and 19,188,036.40 is: 28,782,054.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,921,279.80 : 71,881,919.70 = 19,188,036.40 : x
  2. Step 2: Convert to fraction form
    47,921,279.80/71,881,919.70 = 19,188,036.40/x
  3. Step 3: Cross multiply
    47,921,279.80x = 71,881,919.70 × 19,188,036.40
  4. Step 4: Simplify right side
    47,921,279.80x = 1,379,272,891,705,477
  5. Step 5: Solve for x
    x = 1,379,272,891,705,477/47,921,279.80
  6. Step 6: Final answer
    x = 28,782,054.60

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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.