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Finding the Fourth Proportional to 84,685.93, 127,028.94 and 21,510.79

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Solution

The fourth proportional to 84,685.93, 127,028.94 and 21,510.79 is: 32,266.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,685.93 : 127,028.94 = 21,510.79 : x
  2. Step 2: Convert to fraction form
    84,685.93/127,028.94 = 21,510.79/x
  3. Step 3: Cross multiply
    84,685.93x = 127,028.94 × 21,510.79
  4. Step 4: Simplify right side
    84,685.93x = 2,732,492,852.26
  5. Step 5: Solve for x
    x = 2,732,492,852.26/84,685.93
  6. Step 6: Final answer
    x = 32,266.20

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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.