Home / 70,815.21-97,721.24-38,977.98

Finding the Fourth Proportional to 70,815.21, 97,721.24 and 38,977.98

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Solution

The fourth proportional to 70,815.21, 97,721.24 and 38,977.98 is: 53,787.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,815.21 : 97,721.24 = 38,977.98 : x
  2. Step 2: Convert to fraction form
    70,815.21/97,721.24 = 38,977.98/x
  3. Step 3: Cross multiply
    70,815.21x = 97,721.24 × 38,977.98
  4. Step 4: Simplify right side
    70,815.21x = 3,808,976,343.41
  5. Step 5: Solve for x
    x = 3,808,976,343.41/70,815.21
  6. Step 6: Final answer
    x = 53,787.55

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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.