Home / 30,696,932.79-42,357,747.02-18,308,480.20

Finding the Fourth Proportional to 30,696,932.79, 42,357,747.02 and 18,308,480.20

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Solution

The fourth proportional to 30,696,932.79, 42,357,747.02 and 18,308,480.20 is: 25,263,304.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,696,932.79 : 42,357,747.02 = 18,308,480.20 : x
  2. Step 2: Convert to fraction form
    30,696,932.79/42,357,747.02 = 18,308,480.20/x
  3. Step 3: Cross multiply
    30,696,932.79x = 42,357,747.02 × 18,308,480.20
  4. Step 4: Simplify right side
    30,696,932.79x = 775,505,972,434,842.38
  5. Step 5: Solve for x
    x = 775,505,972,434,842.38/30,696,932.79
  6. Step 6: Final answer
    x = 25,263,304.90

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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.