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Finding the Fourth Proportional to 72,459,009.60, 108,657,021.60 and 23,918,107.20

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Solution

The fourth proportional to 72,459,009.60, 108,657,021.60 and 23,918,107.20 is: 35,866,765.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,459,009.60 : 108,657,021.60 = 23,918,107.20 : x
  2. Step 2: Convert to fraction form
    72,459,009.60/108,657,021.60 = 23,918,107.20/x
  3. Step 3: Cross multiply
    72,459,009.60x = 108,657,021.60 × 23,918,107.20
  4. Step 4: Simplify right side
    72,459,009.60x = 2,598,870,290,661,515.50
  5. Step 5: Solve for x
    x = 2,598,870,290,661,515.50/72,459,009.60
  6. Step 6: Final answer
    x = 35,866,765.29

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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.