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Finding the Fourth Proportional to 76,448.40, 114,672.60 and 73,386.60

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Solution

The fourth proportional to 76,448.40, 114,672.60 and 73,386.60 is: 110,079.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,448.40 : 114,672.60 = 73,386.60 : x
  2. Step 2: Convert to fraction form
    76,448.40/114,672.60 = 73,386.60/x
  3. Step 3: Cross multiply
    76,448.40x = 114,672.60 × 73,386.60
  4. Step 4: Simplify right side
    76,448.40x = 8,415,432,227.16
  5. Step 5: Solve for x
    x = 8,415,432,227.16/76,448.40
  6. Step 6: Final answer
    x = 110,079.90

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1.5x scale

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.