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Finding the Fourth Proportional to 66,806,691.60, 100,219,368.60 and 28,467,901.20

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Solution

The fourth proportional to 66,806,691.60, 100,219,368.60 and 28,467,901.20 is: 42,705,828.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,806,691.60 : 100,219,368.60 = 28,467,901.20 : x
  2. Step 2: Convert to fraction form
    66,806,691.60/100,219,368.60 = 28,467,901.20/x
  3. Step 3: Cross multiply
    66,806,691.60x = 100,219,368.60 × 28,467,901.20
  4. Step 4: Simplify right side
    66,806,691.60x = 2,853,035,083,631,182
  5. Step 5: Solve for x
    x = 2,853,035,083,631,182/66,806,691.60
  6. Step 6: Final answer
    x = 42,705,828.04

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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.