Home / 72,776,052.80-109,164,079.20-66,823,913.60

Finding the Fourth Proportional to 72,776,052.80, 109,164,079.20 and 66,823,913.60

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Solution

The fourth proportional to 72,776,052.80, 109,164,079.20 and 66,823,913.60 is: 100,235,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,776,052.80 : 109,164,079.20 = 66,823,913.60 : x
  2. Step 2: Convert to fraction form
    72,776,052.80/109,164,079.20 = 66,823,913.60/x
  3. Step 3: Cross multiply
    72,776,052.80x = 109,164,079.20 × 66,823,913.60
  4. Step 4: Simplify right side
    72,776,052.80x = 7,294,770,996,684,357
  5. Step 5: Solve for x
    x = 7,294,770,996,684,357/72,776,052.80
  6. Step 6: Final answer
    x = 100,235,870.40

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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.