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Finding the Fourth Proportional to 61,380.30, 84,752.48 and 47,928.22

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Solution

The fourth proportional to 61,380.30, 84,752.48 and 47,928.22 is: 66,178.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,380.30 : 84,752.48 = 47,928.22 : x
  2. Step 2: Convert to fraction form
    61,380.30/84,752.48 = 47,928.22/x
  3. Step 3: Cross multiply
    61,380.30x = 84,752.48 × 47,928.22
  4. Step 4: Simplify right side
    61,380.30x = 4,062,035,506.99
  5. Step 5: Solve for x
    x = 4,062,035,506.99/61,380.30
  6. Step 6: Final answer
    x = 66,178.16

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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.