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Finding the Fourth Proportional to 77,196.60, 115,800.30 and 30,443.40

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Solution

The fourth proportional to 77,196.60, 115,800.30 and 30,443.40 is: 45,667.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,196.60 : 115,800.30 = 30,443.40 : x
  2. Step 2: Convert to fraction form
    77,196.60/115,800.30 = 30,443.40/x
  3. Step 3: Cross multiply
    77,196.60x = 115,800.30 × 30,443.40
  4. Step 4: Simplify right side
    77,196.60x = 3,525,354,853.02
  5. Step 5: Solve for x
    x = 3,525,354,853.02/77,196.60
  6. Step 6: Final answer
    x = 45,667.23

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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.