Home / 45,871.79-68,836.91-20,914.32

Finding the Fourth Proportional to 45,871.79, 68,836.91 and 20,914.32

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Solution

The fourth proportional to 45,871.79, 68,836.91 and 20,914.32 is: 31,384.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,871.79 : 68,836.91 = 20,914.32 : x
  2. Step 2: Convert to fraction form
    45,871.79/68,836.91 = 20,914.32/x
  3. Step 3: Cross multiply
    45,871.79x = 68,836.91 × 20,914.32
  4. Step 4: Simplify right side
    45,871.79x = 1,439,677,058.98
  5. Step 5: Solve for x
    x = 1,439,677,058.98/45,871.79
  6. Step 6: Final answer
    x = 31,384.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.