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Finding the Fourth Proportional to 92,981.61, 128,314.80 and 50,540.04

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Solution

The fourth proportional to 92,981.61, 128,314.80 and 50,540.04 is: 69,745.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,981.61 : 128,314.80 = 50,540.04 : x
  2. Step 2: Convert to fraction form
    92,981.61/128,314.80 = 50,540.04/x
  3. Step 3: Cross multiply
    92,981.61x = 128,314.80 × 50,540.04
  4. Step 4: Simplify right side
    92,981.61x = 6,485,035,124.59
  5. Step 5: Solve for x
    x = 6,485,035,124.59/92,981.61
  6. Step 6: Final answer
    x = 69,745.35

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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.