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Finding the Fourth Proportional to 35,390.09, 48,840.50 and 19,478.05

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Solution

The fourth proportional to 35,390.09, 48,840.50 and 19,478.05 is: 26,880.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,390.09 : 48,840.50 = 19,478.05 : x
  2. Step 2: Convert to fraction form
    35,390.09/48,840.50 = 19,478.05/x
  3. Step 3: Cross multiply
    35,390.09x = 48,840.50 × 19,478.05
  4. Step 4: Simplify right side
    35,390.09x = 951,317,701.03
  5. Step 5: Solve for x
    x = 951,317,701.03/35,390.09
  6. Step 6: Final answer
    x = 26,880.91

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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.