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Finding the Fourth Proportional to 85,891.72, 118,533.74 and 51,893.64

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Solution

The fourth proportional to 85,891.72, 118,533.74 and 51,893.64 is: 71,615.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,891.72 : 118,533.74 = 51,893.64 : x
  2. Step 2: Convert to fraction form
    85,891.72/118,533.74 = 51,893.64/x
  3. Step 3: Cross multiply
    85,891.72x = 118,533.74 × 51,893.64
  4. Step 4: Simplify right side
    85,891.72x = 6,151,146,509.01
  5. Step 5: Solve for x
    x = 6,151,146,509.01/85,891.72
  6. Step 6: Final answer
    x = 71,615.13

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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.