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Finding the Fourth Proportional to 55,602.40, 83,411.70 and 18,164.20

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Solution

The fourth proportional to 55,602.40, 83,411.70 and 18,164.20 is: 27,248.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,602.40 : 83,411.70 = 18,164.20 : x
  2. Step 2: Convert to fraction form
    55,602.40/83,411.70 = 18,164.20/x
  3. Step 3: Cross multiply
    55,602.40x = 83,411.70 × 18,164.20
  4. Step 4: Simplify right side
    55,602.40x = 1,515,106,801.14
  5. Step 5: Solve for x
    x = 1,515,106,801.14/55,602.40
  6. Step 6: Final answer
    x = 27,248.95

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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.