Home / 72,770,485.20-109,155,727.80-71,813,891.40

Finding the Fourth Proportional to 72,770,485.20, 109,155,727.80 and 71,813,891.40

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Solution

The fourth proportional to 72,770,485.20, 109,155,727.80 and 71,813,891.40 is: 107,720,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,770,485.20 : 109,155,727.80 = 71,813,891.40 : x
  2. Step 2: Convert to fraction form
    72,770,485.20/109,155,727.80 = 71,813,891.40/x
  3. Step 3: Cross multiply
    72,770,485.20x = 109,155,727.80 × 71,813,891.40
  4. Step 4: Simplify right side
    72,770,485.20x = 7,838,897,581,917,161
  5. Step 5: Solve for x
    x = 7,838,897,581,917,161/72,770,485.20
  6. Step 6: Final answer
    x = 107,720,837.10

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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.