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Finding the Fourth Proportional to 85,140.74, 117,480.15 and 51,606.74

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Solution

The fourth proportional to 85,140.74, 117,480.15 and 51,606.74 is: 71,208.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,140.74 : 117,480.15 = 51,606.74 : x
  2. Step 2: Convert to fraction form
    85,140.74/117,480.15 = 51,606.74/x
  3. Step 3: Cross multiply
    85,140.74x = 117,480.15 × 51,606.74
  4. Step 4: Simplify right side
    85,140.74x = 6,062,766,968.81
  5. Step 5: Solve for x
    x = 6,062,766,968.81/85,140.74
  6. Step 6: Final answer
    x = 71,208.77

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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.