Home / 85,885.32-118,518.18-51,913.72

Finding the Fourth Proportional to 85,885.32, 118,518.18 and 51,913.72

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Solution

The fourth proportional to 85,885.32, 118,518.18 and 51,913.72 is: 71,638.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,885.32 : 118,518.18 = 51,913.72 : x
  2. Step 2: Convert to fraction form
    85,885.32/118,518.18 = 51,913.72/x
  3. Step 3: Cross multiply
    85,885.32x = 118,518.18 × 51,913.72
  4. Step 4: Simplify right side
    85,885.32x = 6,152,719,611.43
  5. Step 5: Solve for x
    x = 6,152,719,611.43/85,885.32
  6. Step 6: Final answer
    x = 71,638.78

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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.