Home / 72,515,918.72-108,793,808.64-21,397,938.56

Finding the Fourth Proportional to 72,515,918.72, 108,793,808.64 and 21,397,938.56

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Solution

The fourth proportional to 72,515,918.72, 108,793,808.64 and 21,397,938.56 is: 32,102,788.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,515,918.72 : 108,793,808.64 = 21,397,938.56 : x
  2. Step 2: Convert to fraction form
    72,515,918.72/108,793,808.64 = 21,397,938.56/x
  3. Step 3: Cross multiply
    72,515,918.72x = 108,793,808.64 × 21,397,938.56
  4. Step 4: Simplify right side
    72,515,918.72x = 2,327,963,232,987,117
  5. Step 5: Solve for x
    x = 2,327,963,232,987,117/72,515,918.72
  6. Step 6: Final answer
    x = 32,102,788.93

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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.