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Finding the Fourth Proportional to 112,045.40, 168,035.70 and 40,959.80

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Solution

The fourth proportional to 112,045.40, 168,035.70 and 40,959.80 is: 61,427.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,045.40 : 168,035.70 = 40,959.80 : x
  2. Step 2: Convert to fraction form
    112,045.40/168,035.70 = 40,959.80/x
  3. Step 3: Cross multiply
    112,045.40x = 168,035.70 × 40,959.80
  4. Step 4: Simplify right side
    112,045.40x = 6,882,708,664.86
  5. Step 5: Solve for x
    x = 6,882,708,664.86/112,045.40
  6. Step 6: Final answer
    x = 61,427.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.