Home / 72,776,030.80-109,164,046.20-66,823,891.60

Finding the Fourth Proportional to 72,776,030.80, 109,164,046.20 and 66,823,891.60

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Solution

The fourth proportional to 72,776,030.80, 109,164,046.20 and 66,823,891.60 is: 100,235,837.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,776,030.80 : 109,164,046.20 = 66,823,891.60 : x
  2. Step 2: Convert to fraction form
    72,776,030.80/109,164,046.20 = 66,823,891.60/x
  3. Step 3: Cross multiply
    72,776,030.80x = 109,164,046.20 × 66,823,891.60
  4. Step 4: Simplify right side
    72,776,030.80x = 7,294,766,389,886,192
  5. Step 5: Solve for x
    x = 7,294,766,389,886,192/72,776,030.80
  6. Step 6: Final answer
    x = 100,235,837.40

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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.