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Finding the Fourth Proportional to 83,415.51, 125,123.27 and 21,086.01

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Solution

The fourth proportional to 83,415.51, 125,123.27 and 21,086.01 is: 31,629.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,415.51 : 125,123.27 = 21,086.01 : x
  2. Step 2: Convert to fraction form
    83,415.51/125,123.27 = 21,086.01/x
  3. Step 3: Cross multiply
    83,415.51x = 125,123.27 × 21,086.01
  4. Step 4: Simplify right side
    83,415.51x = 2,638,350,417.02
  5. Step 5: Solve for x
    x = 2,638,350,417.02/83,415.51
  6. Step 6: Final answer
    x = 31,629.02

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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.