Home / 85,280.42-127,756.60-47,726.80

Finding the Fourth Proportional to 85,280.42, 127,756.60 and 47,726.80

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Solution

The fourth proportional to 85,280.42, 127,756.60 and 47,726.80 is: 71,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,280.42 : 127,756.60 = 47,726.80 : x
  2. Step 2: Convert to fraction form
    85,280.42/127,756.60 = 47,726.80/x
  3. Step 3: Cross multiply
    85,280.42x = 127,756.60 × 47,726.80
  4. Step 4: Simplify right side
    85,280.42x = 6,097,413,696.88
  5. Step 5: Solve for x
    x = 6,097,413,696.88/85,280.42
  6. Step 6: Final answer
    x = 71,498.40

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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.