Home / 85,573.50-128,377.35-26,406.95

Finding the Fourth Proportional to 85,573.50, 128,377.35 and 26,406.95

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Solution

The fourth proportional to 85,573.50, 128,377.35 and 26,406.95 is: 39,615.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,573.50 : 128,377.35 = 26,406.95 : x
  2. Step 2: Convert to fraction form
    85,573.50/128,377.35 = 26,406.95/x
  3. Step 3: Cross multiply
    85,573.50x = 128,377.35 × 26,406.95
  4. Step 4: Simplify right side
    85,573.50x = 3,390,053,620.70
  5. Step 5: Solve for x
    x = 3,390,053,620.70/85,573.50
  6. Step 6: Final answer
    x = 39,615.69

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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.