Home / 69,860,666.40-104,790,999.60-66,912,007.20

Finding the Fourth Proportional to 69,860,666.40, 104,790,999.60 and 66,912,007.20

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Solution

The fourth proportional to 69,860,666.40, 104,790,999.60 and 66,912,007.20 is: 100,368,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,860,666.40 : 104,790,999.60 = 66,912,007.20 : x
  2. Step 2: Convert to fraction form
    69,860,666.40/104,790,999.60 = 66,912,007.20/x
  3. Step 3: Cross multiply
    69,860,666.40x = 104,790,999.60 × 66,912,007.20
  4. Step 4: Simplify right side
    69,860,666.40x = 7,011,776,119,730,397
  5. Step 5: Solve for x
    x = 7,011,776,119,730,397/69,860,666.40
  6. Step 6: Final answer
    x = 100,368,010.80

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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.