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Finding the Fourth Proportional to 92,859.82, 128,147.06 and 54,620.93

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Solution

The fourth proportional to 92,859.82, 128,147.06 and 54,620.93 is: 75,377.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,859.82 : 128,147.06 = 54,620.93 : x
  2. Step 2: Convert to fraction form
    92,859.82/128,147.06 = 54,620.93/x
  3. Step 3: Cross multiply
    92,859.82x = 128,147.06 × 54,620.93
  4. Step 4: Simplify right side
    92,859.82x = 6,999,512,050.89
  5. Step 5: Solve for x
    x = 6,999,512,050.89/92,859.82
  6. Step 6: Final answer
    x = 75,377.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.