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Finding the Fourth Proportional to 85,120.40, 117,461.56 and 46,872.56

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Solution

The fourth proportional to 85,120.40, 117,461.56 and 46,872.56 is: 64,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,120.40 : 117,461.56 = 46,872.56 : x
  2. Step 2: Convert to fraction form
    85,120.40/117,461.56 = 46,872.56/x
  3. Step 3: Cross multiply
    85,120.40x = 117,461.56 × 46,872.56
  4. Step 4: Simplify right side
    85,120.40x = 5,505,724,018.79
  5. Step 5: Solve for x
    x = 5,505,724,018.79/85,120.40
  6. Step 6: Final answer
    x = 64,681.60

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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.