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Finding the Fourth Proportional to 85,774.48, 128,657.60 and 23,445.12

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Solution

The fourth proportional to 85,774.48, 128,657.60 and 23,445.12 is: 35,166.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,774.48 : 128,657.60 = 23,445.12 : x
  2. Step 2: Convert to fraction form
    85,774.48/128,657.60 = 23,445.12/x
  3. Step 3: Cross multiply
    85,774.48x = 128,657.60 × 23,445.12
  4. Step 4: Simplify right side
    85,774.48x = 3,016,392,870.91
  5. Step 5: Solve for x
    x = 3,016,392,870.91/85,774.48
  6. Step 6: Final answer
    x = 35,166.55

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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.