Home / 91,670.13-137,540.16-47,268.63

Finding the Fourth Proportional to 91,670.13, 137,540.16 and 47,268.63

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Solution

The fourth proportional to 91,670.13, 137,540.16 and 47,268.63 is: 70,920.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,670.13 : 137,540.16 = 47,268.63 : x
  2. Step 2: Convert to fraction form
    91,670.13/137,540.16 = 47,268.63/x
  3. Step 3: Cross multiply
    91,670.13x = 137,540.16 × 47,268.63
  4. Step 4: Simplify right side
    91,670.13x = 6,501,334,933.18
  5. Step 5: Solve for x
    x = 6,501,334,933.18/91,670.13
  6. Step 6: Final answer
    x = 70,920.97

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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.