Home / 112,611.50-155,405.82-61,628.76

Finding the Fourth Proportional to 112,611.50, 155,405.82 and 61,628.76

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Solution

The fourth proportional to 112,611.50, 155,405.82 and 61,628.76 is: 85,048.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,611.50 : 155,405.82 = 61,628.76 : x
  2. Step 2: Convert to fraction form
    112,611.50/155,405.82 = 61,628.76/x
  3. Step 3: Cross multiply
    112,611.50x = 155,405.82 × 61,628.76
  4. Step 4: Simplify right side
    112,611.50x = 9,577,467,983.38
  5. Step 5: Solve for x
    x = 9,577,467,983.38/112,611.50
  6. Step 6: Final answer
    x = 85,048.76

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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.