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Finding the Fourth Proportional to 85,157.77, 127,657.23 and 28,959.48

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Solution

The fourth proportional to 85,157.77, 127,657.23 and 28,959.48 is: 43,412.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,157.77 : 127,657.23 = 28,959.48 : x
  2. Step 2: Convert to fraction form
    85,157.77/127,657.23 = 28,959.48/x
  3. Step 3: Cross multiply
    85,157.77x = 127,657.23 × 28,959.48
  4. Step 4: Simplify right side
    85,157.77x = 3,696,886,788.50
  5. Step 5: Solve for x
    x = 3,696,886,788.50/85,157.77
  6. Step 6: Final answer
    x = 43,412.21

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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.