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Finding the Fourth Proportional to 61,928, 85,463.88 and 36,435.68

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Solution

The fourth proportional to 61,928, 85,463.88 and 36,435.68 is: 50,283.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,928 : 85,463.88 = 36,435.68 : x
  2. Step 2: Convert to fraction form
    61,928/85,463.88 = 36,435.68/x
  3. Step 3: Cross multiply
    61,928x = 85,463.88 × 36,435.68
  4. Step 4: Simplify right side
    61,928x = 3,113,934,583.24
  5. Step 5: Solve for x
    x = 3,113,934,583.24/61,928
  6. Step 6: Final answer
    x = 50,283.14

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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.