Home / 30,760,259.80-42,434,705.64-21,941,660.20

Finding the Fourth Proportional to 30,760,259.80, 42,434,705.64 and 21,941,660.20

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Solution

The fourth proportional to 30,760,259.80, 42,434,705.64 and 21,941,660.20 is: 30,269,181.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,760,259.80 : 42,434,705.64 = 21,941,660.20 : x
  2. Step 2: Convert to fraction form
    30,760,259.80/42,434,705.64 = 21,941,660.20/x
  3. Step 3: Cross multiply
    30,760,259.80x = 42,434,705.64 × 21,941,660.20
  4. Step 4: Simplify right side
    30,760,259.80x = 931,087,891,839,903.50
  5. Step 5: Solve for x
    x = 931,087,891,839,903.50/30,760,259.80
  6. Step 6: Final answer
    x = 30,269,181.66

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1.5x scale

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.