Home / 66,409,616.40-99,628,421.40-20,976,003.60

Finding the Fourth Proportional to 66,409,616.40, 99,628,421.40 and 20,976,003.60

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Solution

The fourth proportional to 66,409,616.40, 99,628,421.40 and 20,976,003.60 is: 31,468,426.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,409,616.40 : 99,628,421.40 = 20,976,003.60 : x
  2. Step 2: Convert to fraction form
    66,409,616.40/99,628,421.40 = 20,976,003.60/x
  3. Step 3: Cross multiply
    66,409,616.40x = 99,628,421.40 × 20,976,003.60
  4. Step 4: Simplify right side
    66,409,616.40x = 2,089,806,125,948,717.25
  5. Step 5: Solve for x
    x = 2,089,806,125,948,717.25/66,409,616.40
  6. Step 6: Final answer
    x = 31,468,426.40

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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.