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Finding the Fourth Proportional to 81,662.04, 112,683.16 and 47,662.74

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Solution

The fourth proportional to 81,662.04, 112,683.16 and 47,662.74 is: 65,768.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,662.04 : 112,683.16 = 47,662.74 : x
  2. Step 2: Convert to fraction form
    81,662.04/112,683.16 = 47,662.74/x
  3. Step 3: Cross multiply
    81,662.04x = 112,683.16 × 47,662.74
  4. Step 4: Simplify right side
    81,662.04x = 5,370,788,157.46
  5. Step 5: Solve for x
    x = 5,370,788,157.46/81,662.04
  6. Step 6: Final answer
    x = 65,768.48

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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.