Home / 30,631,966.30-42,274,204.55-18,715,881.75

Finding the Fourth Proportional to 30,631,966.30, 42,274,204.55 and 18,715,881.75

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Solution

The fourth proportional to 30,631,966.30, 42,274,204.55 and 18,715,881.75 is: 25,829,194.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,631,966.30 : 42,274,204.55 = 18,715,881.75 : x
  2. Step 2: Convert to fraction form
    30,631,966.30/42,274,204.55 = 18,715,881.75/x
  3. Step 3: Cross multiply
    30,631,966.30x = 42,274,204.55 × 18,715,881.75
  4. Step 4: Simplify right side
    30,631,966.30x = 791,199,013,433,111.88
  5. Step 5: Solve for x
    x = 791,199,013,433,111.88/30,631,966.30
  6. Step 6: Final answer
    x = 25,829,194.43

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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.