Home / 31,011,680.40-42,784,639.92-30,963,851.52

Finding the Fourth Proportional to 31,011,680.40, 42,784,639.92 and 30,963,851.52

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Solution

The fourth proportional to 31,011,680.40, 42,784,639.92 and 30,963,851.52 is: 42,718,653.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,011,680.40 : 42,784,639.92 = 30,963,851.52 : x
  2. Step 2: Convert to fraction form
    31,011,680.40/42,784,639.92 = 30,963,851.52/x
  3. Step 3: Cross multiply
    31,011,680.40x = 42,784,639.92 × 30,963,851.52
  4. Step 4: Simplify right side
    31,011,680.40x = 1,324,777,237,819,544.75
  5. Step 5: Solve for x
    x = 1,324,777,237,819,544.75/31,011,680.40
  6. Step 6: Final answer
    x = 42,718,653.77

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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.