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Finding the Fourth Proportional to 85,685.76, 118,238.40 and 47,946.24

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Solution

The fourth proportional to 85,685.76, 118,238.40 and 47,946.24 is: 66,161.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,685.76 : 118,238.40 = 47,946.24 : x
  2. Step 2: Convert to fraction form
    85,685.76/118,238.40 = 47,946.24/x
  3. Step 3: Cross multiply
    85,685.76x = 118,238.40 × 47,946.24
  4. Step 4: Simplify right side
    85,685.76x = 5,669,086,703.62
  5. Step 5: Solve for x
    x = 5,669,086,703.62/85,685.76
  6. Step 6: Final answer
    x = 66,161.36

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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.