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Finding the Fourth Proportional to 66,947,786.40, 100,374,440.40 and 30,573,602.40

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Solution

The fourth proportional to 66,947,786.40, 100,374,440.40 and 30,573,602.40 is: 45,838,830.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,947,786.40 : 100,374,440.40 = 30,573,602.40 : x
  2. Step 2: Convert to fraction form
    66,947,786.40/100,374,440.40 = 30,573,602.40/x
  3. Step 3: Cross multiply
    66,947,786.40x = 100,374,440.40 × 30,573,602.40
  4. Step 4: Simplify right side
    66,947,786.40x = 3,068,808,231,912,097
  5. Step 5: Solve for x
    x = 3,068,808,231,912,097/66,947,786.40
  6. Step 6: Final answer
    x = 45,838,830.48

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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.