Home / 72,291,338.90-108,520,989.15-43,569,905.30

Finding the Fourth Proportional to 72,291,338.90, 108,520,989.15 and 43,569,905.30

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Solution

The fourth proportional to 72,291,338.90, 108,520,989.15 and 43,569,905.30 is: 65,405,473.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,291,338.90 : 108,520,989.15 = 43,569,905.30 : x
  2. Step 2: Convert to fraction form
    72,291,338.90/108,520,989.15 = 43,569,905.30/x
  3. Step 3: Cross multiply
    72,291,338.90x = 108,520,989.15 × 43,569,905.30
  4. Step 4: Simplify right side
    72,291,338.90x = 4,728,249,220,327,827
  5. Step 5: Solve for x
    x = 4,728,249,220,327,827/72,291,338.90
  6. Step 6: Final answer
    x = 65,405,473.08

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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.