Home / 85,086.74-127,643.94-28,931.87

Finding the Fourth Proportional to 85,086.74, 127,643.94 and 28,931.87

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Solution

The fourth proportional to 85,086.74, 127,643.94 and 28,931.87 is: 43,402.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,086.74 : 127,643.94 = 28,931.87 : x
  2. Step 2: Convert to fraction form
    85,086.74/127,643.94 = 28,931.87/x
  3. Step 3: Cross multiply
    85,086.74x = 127,643.94 × 28,931.87
  4. Step 4: Simplify right side
    85,086.74x = 3,692,977,240.15
  5. Step 5: Solve for x
    x = 3,692,977,240.15/85,086.74
  6. Step 6: Final answer
    x = 43,402.50

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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.