Home / 72,579,090.20-108,742,664.10-47,006,936.60

Finding the Fourth Proportional to 72,579,090.20, 108,742,664.10 and 47,006,936.60

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Solution

The fourth proportional to 72,579,090.20, 108,742,664.10 and 47,006,936.60 is: 70,428,817.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579,090.20 : 108,742,664.10 = 47,006,936.60 : x
  2. Step 2: Convert to fraction form
    72,579,090.20/108,742,664.10 = 47,006,936.60/x
  3. Step 3: Cross multiply
    72,579,090.20x = 108,742,664.10 × 47,006,936.60
  4. Step 4: Simplify right side
    72,579,090.20x = 5,111,659,517,063,796
  5. Step 5: Solve for x
    x = 5,111,659,517,063,796/72,579,090.20
  6. Step 6: Final answer
    x = 70,428,817.76

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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.