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Finding the Fourth Proportional to 85,756.56, 118,343.88 and 48,030

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Solution

The fourth proportional to 85,756.56, 118,343.88 and 48,030 is: 66,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,756.56 : 118,343.88 = 48,030 : x
  2. Step 2: Convert to fraction form
    85,756.56/118,343.88 = 48,030/x
  3. Step 3: Cross multiply
    85,756.56x = 118,343.88 × 48,030
  4. Step 4: Simplify right side
    85,756.56x = 5,684,056,556.40
  5. Step 5: Solve for x
    x = 5,684,056,556.40/85,756.56
  6. Step 6: Final answer
    x = 66,281.30

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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.