Home / 91,051.58-136,493.25-57,670.70

Finding the Fourth Proportional to 91,051.58, 136,493.25 and 57,670.70

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Solution

The fourth proportional to 91,051.58, 136,493.25 and 57,670.70 is: 86,452.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,051.58 : 136,493.25 = 57,670.70 : x
  2. Step 2: Convert to fraction form
    91,051.58/136,493.25 = 57,670.70/x
  3. Step 3: Cross multiply
    91,051.58x = 136,493.25 × 57,670.70
  4. Step 4: Simplify right side
    91,051.58x = 7,871,661,272.78
  5. Step 5: Solve for x
    x = 7,871,661,272.78/91,051.58
  6. Step 6: Final answer
    x = 86,452.77

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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.