Home / 72,579,213.48-108,851,621.70-20,762,218.56

Finding the Fourth Proportional to 72,579,213.48, 108,851,621.70 and 20,762,218.56

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Solution

The fourth proportional to 72,579,213.48, 108,851,621.70 and 20,762,218.56 is: 31,138,407.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579,213.48 : 108,851,621.70 = 20,762,218.56 : x
  2. Step 2: Convert to fraction form
    72,579,213.48/108,851,621.70 = 20,762,218.56/x
  3. Step 3: Cross multiply
    72,579,213.48x = 108,851,621.70 × 20,762,218.56
  4. Step 4: Simplify right side
    72,579,213.48x = 2,260,001,160,345,838.50
  5. Step 5: Solve for x
    x = 2,260,001,160,345,838.50/72,579,213.48
  6. Step 6: Final answer
    x = 31,138,407.98

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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.