Home / 85,211,791.20-127,817,686.80-71,606,901.60

Finding the Fourth Proportional to 85,211,791.20, 127,817,686.80 and 71,606,901.60

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Solution

The fourth proportional to 85,211,791.20, 127,817,686.80 and 71,606,901.60 is: 107,410,352.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211,791.20 : 127,817,686.80 = 71,606,901.60 : x
  2. Step 2: Convert to fraction form
    85,211,791.20/127,817,686.80 = 71,606,901.60/x
  3. Step 3: Cross multiply
    85,211,791.20x = 127,817,686.80 × 71,606,901.60
  4. Step 4: Simplify right side
    85,211,791.20x = 9,152,628,521,427,218
  5. Step 5: Solve for x
    x = 9,152,628,521,427,218/85,211,791.20
  6. Step 6: Final answer
    x = 107,410,352.40

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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.