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Finding the Fourth Proportional to 35,669.60, 49,212.90 and 20,560.20

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Solution

The fourth proportional to 35,669.60, 49,212.90 and 20,560.20 is: 28,366.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,669.60 : 49,212.90 = 20,560.20 : x
  2. Step 2: Convert to fraction form
    35,669.60/49,212.90 = 20,560.20/x
  3. Step 3: Cross multiply
    35,669.60x = 49,212.90 × 20,560.20
  4. Step 4: Simplify right side
    35,669.60x = 1,011,827,066.58
  5. Step 5: Solve for x
    x = 1,011,827,066.58/35,669.60
  6. Step 6: Final answer
    x = 28,366.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.