Home / 85,611.25-118,143.93-47,885.50

Finding the Fourth Proportional to 85,611.25, 118,143.93 and 47,885.50

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Solution

The fourth proportional to 85,611.25, 118,143.93 and 47,885.50 is: 66,082.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,611.25 : 118,143.93 = 47,885.50 : x
  2. Step 2: Convert to fraction form
    85,611.25/118,143.93 = 47,885.50/x
  3. Step 3: Cross multiply
    85,611.25x = 118,143.93 × 47,885.50
  4. Step 4: Simplify right side
    85,611.25x = 5,657,381,160.02
  5. Step 5: Solve for x
    x = 5,657,381,160.02/85,611.25
  6. Step 6: Final answer
    x = 66,082.22

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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.