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Finding the Fourth Proportional to 85,894.67, 128,854.29 and 26,736.32

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Solution

The fourth proportional to 85,894.67, 128,854.29 and 26,736.32 is: 40,108.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,894.67 : 128,854.29 = 26,736.32 : x
  2. Step 2: Convert to fraction form
    85,894.67/128,854.29 = 26,736.32/x
  3. Step 3: Cross multiply
    85,894.67x = 128,854.29 × 26,736.32
  4. Step 4: Simplify right side
    85,894.67x = 3,445,089,530.81
  5. Step 5: Solve for x
    x = 3,445,089,530.81/85,894.67
  6. Step 6: Final answer
    x = 40,108.30

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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.