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Finding the Fourth Proportional to 92,728.80, 139,093.20 and 59,486.40

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Solution

The fourth proportional to 92,728.80, 139,093.20 and 59,486.40 is: 89,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,728.80 : 139,093.20 = 59,486.40 : x
  2. Step 2: Convert to fraction form
    92,728.80/139,093.20 = 59,486.40/x
  3. Step 3: Cross multiply
    92,728.80x = 139,093.20 × 59,486.40
  4. Step 4: Simplify right side
    92,728.80x = 8,274,153,732.48
  5. Step 5: Solve for x
    x = 8,274,153,732.48/92,728.80
  6. Step 6: Final answer
    x = 89,229.60

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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.