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Finding the Fourth Proportional to 72,374,430.80, 108,524,321.40 and 26,912,824.40

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Solution

The fourth proportional to 72,374,430.80, 108,524,321.40 and 26,912,824.40 is: 40,355,357.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,374,430.80 : 108,524,321.40 = 26,912,824.40 : x
  2. Step 2: Convert to fraction form
    72,374,430.80/108,524,321.40 = 26,912,824.40/x
  3. Step 3: Cross multiply
    72,374,430.80x = 108,524,321.40 × 26,912,824.40
  4. Step 4: Simplify right side
    72,374,430.80x = 2,920,696,004,967,362
  5. Step 5: Solve for x
    x = 2,920,696,004,967,362/72,374,430.80
  6. Step 6: Final answer
    x = 40,355,357.17

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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.