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Finding the Fourth Proportional to 85,662.80, 118,213.64 and 47,937.36

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Solution

The fourth proportional to 85,662.80, 118,213.64 and 47,937.36 is: 66,152.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,662.80 : 118,213.64 = 47,937.36 : x
  2. Step 2: Convert to fraction form
    85,662.80/118,213.64 = 47,937.36/x
  3. Step 3: Cross multiply
    85,662.80x = 118,213.64 × 47,937.36
  4. Step 4: Simplify right side
    85,662.80x = 5,666,849,817.59
  5. Step 5: Solve for x
    x = 5,666,849,817.59/85,662.80
  6. Step 6: Final answer
    x = 66,152.98

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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.