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Finding the Fourth Proportional to 92,871.15, 128,209.40 and 58,914.33

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Solution

The fourth proportional to 92,871.15, 128,209.40 and 58,914.33 is: 81,331.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,871.15 : 128,209.40 = 58,914.33 : x
  2. Step 2: Convert to fraction form
    92,871.15/128,209.40 = 58,914.33/x
  3. Step 3: Cross multiply
    92,871.15x = 128,209.40 × 58,914.33
  4. Step 4: Simplify right side
    92,871.15x = 7,553,370,900.70
  5. Step 5: Solve for x
    x = 7,553,370,900.70/92,871.15
  6. Step 6: Final answer
    x = 81,331.73

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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.