Home / 85,743.28-118,319.16-48,012.40

Finding the Fourth Proportional to 85,743.28, 118,319.16 and 48,012.40

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Solution

The fourth proportional to 85,743.28, 118,319.16 and 48,012.40 is: 66,253.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,743.28 : 118,319.16 = 48,012.40 : x
  2. Step 2: Convert to fraction form
    85,743.28/118,319.16 = 48,012.40/x
  3. Step 3: Cross multiply
    85,743.28x = 118,319.16 × 48,012.40
  4. Step 4: Simplify right side
    85,743.28x = 5,680,786,837.58
  5. Step 5: Solve for x
    x = 5,680,786,837.58/85,743.28
  6. Step 6: Final answer
    x = 66,253.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.