Home / 84,685.30-127,028-21,510.16

Finding the Fourth Proportional to 84,685.30, 127,028 and 21,510.16

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Solution

The fourth proportional to 84,685.30, 127,028 and 21,510.16 is: 32,265.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,685.30 : 127,028 = 21,510.16 : x
  2. Step 2: Convert to fraction form
    84,685.30/127,028 = 21,510.16/x
  3. Step 3: Cross multiply
    84,685.30x = 127,028 × 21,510.16
  4. Step 4: Simplify right side
    84,685.30x = 2,732,392,604.48
  5. Step 5: Solve for x
    x = 2,732,392,604.48/84,685.30
  6. Step 6: Final answer
    x = 32,265.25

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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.