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Finding the Fourth Proportional to 92,990.96, 128,328.28 and 50,549.40

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Solution

The fourth proportional to 92,990.96, 128,328.28 and 50,549.40 is: 69,758.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,990.96 : 128,328.28 = 50,549.40 : x
  2. Step 2: Convert to fraction form
    92,990.96/128,328.28 = 50,549.40/x
  3. Step 3: Cross multiply
    92,990.96x = 128,328.28 × 50,549.40
  4. Step 4: Simplify right side
    92,990.96x = 6,486,917,557.03
  5. Step 5: Solve for x
    x = 6,486,917,557.03/92,990.96
  6. Step 6: Final answer
    x = 69,758.58

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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.