Home / 30,998,057.97-42,783,242.31-20,525,602.98

Finding the Fourth Proportional to 30,998,057.97, 42,783,242.31 and 20,525,602.98

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Solution

The fourth proportional to 30,998,057.97, 42,783,242.31 and 20,525,602.98 is: 28,329,253.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,998,057.97 : 42,783,242.31 = 20,525,602.98 : x
  2. Step 2: Convert to fraction form
    30,998,057.97/42,783,242.31 = 20,525,602.98/x
  3. Step 3: Cross multiply
    30,998,057.97x = 42,783,242.31 × 20,525,602.98
  4. Step 4: Simplify right side
    30,998,057.97x = 878,151,845,852,198.12
  5. Step 5: Solve for x
    x = 878,151,845,852,198.12/30,998,057.97
  6. Step 6: Final answer
    x = 28,329,253.62

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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.