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Finding the Fourth Proportional to 72,257,269.60, 108,354,411.60 and 29,112,133.60

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Solution

The fourth proportional to 72,257,269.60, 108,354,411.60 and 29,112,133.60 is: 43,655,512.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,257,269.60 : 108,354,411.60 = 29,112,133.60 : x
  2. Step 2: Convert to fraction form
    72,257,269.60/108,354,411.60 = 29,112,133.60/x
  3. Step 3: Cross multiply
    72,257,269.60x = 108,354,411.60 × 29,112,133.60
  4. Step 4: Simplify right side
    72,257,269.60x = 3,154,428,106,648,589.50
  5. Step 5: Solve for x
    x = 3,154,428,106,648,589.50/72,257,269.60
  6. Step 6: Final answer
    x = 43,655,512.09

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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.