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Finding the Fourth Proportional to 118,040.40, 177,071.40 and 47,905.20

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Solution

The fourth proportional to 118,040.40, 177,071.40 and 47,905.20 is: 71,862.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,040.40 : 177,071.40 = 47,905.20 : x
  2. Step 2: Convert to fraction form
    118,040.40/177,071.40 = 47,905.20/x
  3. Step 3: Cross multiply
    118,040.40x = 177,071.40 × 47,905.20
  4. Step 4: Simplify right side
    118,040.40x = 8,482,640,831.28
  5. Step 5: Solve for x
    x = 8,482,640,831.28/118,040.40
  6. Step 6: Final answer
    x = 71,862.18

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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.