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Finding the Fourth Proportional to 35,812.60, 53,718.90 and 20,260.60

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Solution

The fourth proportional to 35,812.60, 53,718.90 and 20,260.60 is: 30,390.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,812.60 : 53,718.90 = 20,260.60 : x
  2. Step 2: Convert to fraction form
    35,812.60/53,718.90 = 20,260.60/x
  3. Step 3: Cross multiply
    35,812.60x = 53,718.90 × 20,260.60
  4. Step 4: Simplify right side
    35,812.60x = 1,088,377,145.34
  5. Step 5: Solve for x
    x = 1,088,377,145.34/35,812.60
  6. Step 6: Final answer
    x = 30,390.90

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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.