Home / 66,185,722.80-99,287,915.40-20,742,778.80

Finding the Fourth Proportional to 66,185,722.80, 99,287,915.40 and 20,742,778.80

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Solution

The fourth proportional to 66,185,722.80, 99,287,915.40 and 20,742,778.80 is: 31,117,092.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,185,722.80 : 99,287,915.40 = 20,742,778.80 : x
  2. Step 2: Convert to fraction form
    66,185,722.80/99,287,915.40 = 20,742,778.80/x
  3. Step 3: Cross multiply
    66,185,722.80x = 99,287,915.40 × 20,742,778.80
  4. Step 4: Simplify right side
    66,185,722.80x = 2,059,507,266,655,313.75
  5. Step 5: Solve for x
    x = 2,059,507,266,655,313.75/66,185,722.80
  6. Step 6: Final answer
    x = 31,117,092.62

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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.