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Finding the Fourth Proportional to 92,990.63, 128,327.49 and 50,549.06

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Solution

The fourth proportional to 92,990.63, 128,327.49 and 50,549.06 is: 69,757.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,990.63 : 128,327.49 = 50,549.06 : x
  2. Step 2: Convert to fraction form
    92,990.63/128,327.49 = 50,549.06/x
  3. Step 3: Cross multiply
    92,990.63x = 128,327.49 × 50,549.06
  4. Step 4: Simplify right side
    92,990.63x = 6,486,834,312.48
  5. Step 5: Solve for x
    x = 6,486,834,312.48/92,990.63
  6. Step 6: Final answer
    x = 69,757.93

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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.