Home / 72,656,871.56-100,290,779.38-43,297,410.68

Finding the Fourth Proportional to 72,656,871.56, 100,290,779.38 and 43,297,410.68

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Solution

The fourth proportional to 72,656,871.56, 100,290,779.38 and 43,297,410.68 is: 59,764,905.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,656,871.56 : 100,290,779.38 = 43,297,410.68 : x
  2. Step 2: Convert to fraction form
    72,656,871.56/100,290,779.38 = 43,297,410.68/x
  3. Step 3: Cross multiply
    72,656,871.56x = 100,290,779.38 × 43,297,410.68
  4. Step 4: Simplify right side
    72,656,871.56x = 4,342,331,062,233,135.50
  5. Step 5: Solve for x
    x = 4,342,331,062,233,135.50/72,656,871.56
  6. Step 6: Final answer
    x = 59,764,905.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.