Home / 91,965.54-138,123.27-57,148.50

Finding the Fourth Proportional to 91,965.54, 138,123.27 and 57,148.50

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Solution

The fourth proportional to 91,965.54, 138,123.27 and 57,148.50 is: 85,831.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,965.54 : 138,123.27 = 57,148.50 : x
  2. Step 2: Convert to fraction form
    91,965.54/138,123.27 = 57,148.50/x
  3. Step 3: Cross multiply
    91,965.54x = 138,123.27 × 57,148.50
  4. Step 4: Simplify right side
    91,965.54x = 7,893,537,695.60
  5. Step 5: Solve for x
    x = 7,893,537,695.60/91,965.54
  6. Step 6: Final answer
    x = 85,831.47

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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.