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Finding the Fourth Proportional to 72,733,817.60, 109,100,726.40 and 45,470,894.30

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Solution

The fourth proportional to 72,733,817.60, 109,100,726.40 and 45,470,894.30 is: 68,206,341.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,733,817.60 : 109,100,726.40 = 45,470,894.30 : x
  2. Step 2: Convert to fraction form
    72,733,817.60/109,100,726.40 = 45,470,894.30/x
  3. Step 3: Cross multiply
    72,733,817.60x = 109,100,726.40 × 45,470,894.30
  4. Step 4: Simplify right side
    72,733,817.60x = 4,960,907,598,187,619
  5. Step 5: Solve for x
    x = 4,960,907,598,187,619/72,733,817.60
  6. Step 6: Final answer
    x = 68,206,341.45

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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.