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Finding the Fourth Proportional to 55,422.60, 83,133.90 and 38,801.40

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Solution

The fourth proportional to 55,422.60, 83,133.90 and 38,801.40 is: 58,202.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,422.60 : 83,133.90 = 38,801.40 : x
  2. Step 2: Convert to fraction form
    55,422.60/83,133.90 = 38,801.40/x
  3. Step 3: Cross multiply
    55,422.60x = 83,133.90 × 38,801.40
  4. Step 4: Simplify right side
    55,422.60x = 3,225,711,707.46
  5. Step 5: Solve for x
    x = 3,225,711,707.46/55,422.60
  6. Step 6: Final answer
    x = 58,202.10

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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.