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Finding the Fourth Proportional to 92,895, 128,195.34 and 54,655.98

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Solution

The fourth proportional to 92,895, 128,195.34 and 54,655.98 is: 75,425.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,895 : 128,195.34 = 54,655.98 : x
  2. Step 2: Convert to fraction form
    92,895/128,195.34 = 54,655.98/x
  3. Step 3: Cross multiply
    92,895x = 128,195.34 × 54,655.98
  4. Step 4: Simplify right side
    92,895x = 7,006,641,939.13
  5. Step 5: Solve for x
    x = 7,006,641,939.13/92,895
  6. Step 6: Final answer
    x = 75,425.39

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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.