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Finding the Fourth Proportional to 100,572.60, 150,686.10 and 53,117.40

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Solution

The fourth proportional to 100,572.60, 150,686.10 and 53,117.40 is: 79,584.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,572.60 : 150,686.10 = 53,117.40 : x
  2. Step 2: Convert to fraction form
    100,572.60/150,686.10 = 53,117.40/x
  3. Step 3: Cross multiply
    100,572.60x = 150,686.10 × 53,117.40
  4. Step 4: Simplify right side
    100,572.60x = 8,004,053,848.14
  5. Step 5: Solve for x
    x = 8,004,053,848.14/100,572.60
  6. Step 6: Final answer
    x = 79,584.84

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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.