Home / 85,611.36-118,124.64-53,768.64

Finding the Fourth Proportional to 85,611.36, 118,124.64 and 53,768.64

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Solution

The fourth proportional to 85,611.36, 118,124.64 and 53,768.64 is: 74,188.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,611.36 : 118,124.64 = 53,768.64 : x
  2. Step 2: Convert to fraction form
    85,611.36/118,124.64 = 53,768.64/x
  3. Step 3: Cross multiply
    85,611.36x = 118,124.64 × 53,768.64
  4. Step 4: Simplify right side
    85,611.36x = 6,351,401,243.29
  5. Step 5: Solve for x
    x = 6,351,401,243.29/85,611.36
  6. Step 6: Final answer
    x = 74,188.77

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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.