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Finding the Fourth Proportional to 65,246, 90,039.57 and 35,438

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Solution

The fourth proportional to 65,246, 90,039.57 and 35,438 is: 48,904.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,246 : 90,039.57 = 35,438 : x
  2. Step 2: Convert to fraction form
    65,246/90,039.57 = 35,438/x
  3. Step 3: Cross multiply
    65,246x = 90,039.57 × 35,438
  4. Step 4: Simplify right side
    65,246x = 3,190,822,281.66
  5. Step 5: Solve for x
    x = 3,190,822,281.66/65,246
  6. Step 6: Final answer
    x = 48,904.49

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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.