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Finding the Fourth Proportional to 53,165.40, 79,812.90 and 26,856.60

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Solution

The fourth proportional to 53,165.40, 79,812.90 and 26,856.60 is: 40,317.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,165.40 : 79,812.90 = 26,856.60 : x
  2. Step 2: Convert to fraction form
    53,165.40/79,812.90 = 26,856.60/x
  3. Step 3: Cross multiply
    53,165.40x = 79,812.90 × 26,856.60
  4. Step 4: Simplify right side
    53,165.40x = 2,143,503,130.14
  5. Step 5: Solve for x
    x = 2,143,503,130.14/53,165.40
  6. Step 6: Final answer
    x = 40,317.63

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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.