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Finding the Fourth Proportional to 72,684,611.20, 109,026,916.80 and 44,019,164.80

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Solution

The fourth proportional to 72,684,611.20, 109,026,916.80 and 44,019,164.80 is: 66,028,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,684,611.20 : 109,026,916.80 = 44,019,164.80 : x
  2. Step 2: Convert to fraction form
    72,684,611.20/109,026,916.80 = 44,019,164.80/x
  3. Step 3: Cross multiply
    72,684,611.20x = 109,026,916.80 × 44,019,164.80
  4. Step 4: Simplify right side
    72,684,611.20x = 4,799,273,818,255,088
  5. Step 5: Solve for x
    x = 4,799,273,818,255,088/72,684,611.20
  6. Step 6: Final answer
    x = 66,028,747.20

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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.