Home / 85,464,589.56-128,324,955.06-73,985,463.96

Finding the Fourth Proportional to 85,464,589.56, 128,324,955.06 and 73,985,463.96

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Solution

The fourth proportional to 85,464,589.56, 128,324,955.06 and 73,985,463.96 is: 111,089,064.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,464,589.56 : 128,324,955.06 = 73,985,463.96 : x
  2. Step 2: Convert to fraction form
    85,464,589.56/128,324,955.06 = 73,985,463.96/x
  3. Step 3: Cross multiply
    85,464,589.56x = 128,324,955.06 × 73,985,463.96
  4. Step 4: Simplify right side
    85,464,589.56x = 9,494,181,337,760,248
  5. Step 5: Solve for x
    x = 9,494,181,337,760,248/85,464,589.56
  6. Step 6: Final answer
    x = 111,089,064.92

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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.