Home / 85,077.12-127,475.27-49,438.40

Finding the Fourth Proportional to 85,077.12, 127,475.27 and 49,438.40

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Solution

The fourth proportional to 85,077.12, 127,475.27 and 49,438.40 is: 74,076.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,077.12 : 127,475.27 = 49,438.40 : x
  2. Step 2: Convert to fraction form
    85,077.12/127,475.27 = 49,438.40/x
  3. Step 3: Cross multiply
    85,077.12x = 127,475.27 × 49,438.40
  4. Step 4: Simplify right side
    85,077.12x = 6,302,173,406.24
  5. Step 5: Solve for x
    x = 6,302,173,406.24/85,077.12
  6. Step 6: Final answer
    x = 74,076.01

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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.