Home / 72,065,870.40-108,101,795.13-20,947,889.19

Finding the Fourth Proportional to 72,065,870.40, 108,101,795.13 and 20,947,889.19

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Solution

The fourth proportional to 72,065,870.40, 108,101,795.13 and 20,947,889.19 is: 31,422,702.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,065,870.40 : 108,101,795.13 = 20,947,889.19 : x
  2. Step 2: Convert to fraction form
    72,065,870.40/108,101,795.13 = 20,947,889.19/x
  3. Step 3: Cross multiply
    72,065,870.40x = 108,101,795.13 × 20,947,889.19
  4. Step 4: Simplify right side
    72,065,870.40x = 2,264,504,425,623,321.50
  5. Step 5: Solve for x
    x = 2,264,504,425,623,321.50/72,065,870.40
  6. Step 6: Final answer
    x = 31,422,702.77

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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.