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Finding the Fourth Proportional to 64,989,543.40, 89,687,738.83 and 35,620,951.21

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Solution

The fourth proportional to 64,989,543.40, 89,687,738.83 and 35,620,951.21 is: 49,158,101.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,989,543.40 : 89,687,738.83 = 35,620,951.21 : x
  2. Step 2: Convert to fraction form
    64,989,543.40/89,687,738.83 = 35,620,951.21/x
  3. Step 3: Cross multiply
    64,989,543.40x = 89,687,738.83 × 35,620,951.21
  4. Step 4: Simplify right side
    64,989,543.40x = 3,194,762,569,213,717
  5. Step 5: Solve for x
    x = 3,194,762,569,213,717/64,989,543.40
  6. Step 6: Final answer
    x = 49,158,101.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.