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Finding the Fourth Proportional to 67,806,930.40, 101,766,382.80 and 31,471,237.60

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Solution

The fourth proportional to 67,806,930.40, 101,766,382.80 and 31,471,237.60 is: 47,232,841.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,806,930.40 : 101,766,382.80 = 31,471,237.60 : x
  2. Step 2: Convert to fraction form
    67,806,930.40/101,766,382.80 = 31,471,237.60/x
  3. Step 3: Cross multiply
    67,806,930.40x = 101,766,382.80 × 31,471,237.60
  4. Step 4: Simplify right side
    67,806,930.40x = 3,202,714,012,791,353.50
  5. Step 5: Solve for x
    x = 3,202,714,012,791,353.50/67,806,930.40
  6. Step 6: Final answer
    x = 47,232,841.74

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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.