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Finding the Fourth Proportional to 69,990,202.80, 104,985,304.20 and 55,535,007.60

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Solution

The fourth proportional to 69,990,202.80, 104,985,304.20 and 55,535,007.60 is: 83,302,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,990,202.80 : 104,985,304.20 = 55,535,007.60 : x
  2. Step 2: Convert to fraction form
    69,990,202.80/104,985,304.20 = 55,535,007.60/x
  3. Step 3: Cross multiply
    69,990,202.80x = 104,985,304.20 × 55,535,007.60
  4. Step 4: Simplify right side
    69,990,202.80x = 5,830,359,666,635,312
  5. Step 5: Solve for x
    x = 5,830,359,666,635,312/69,990,202.80
  6. Step 6: Final answer
    x = 83,302,511.40

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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.