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Finding the Fourth Proportional to 84,950.40, 127,522.80 and 49,909.80

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Solution

The fourth proportional to 84,950.40, 127,522.80 and 49,909.80 is: 74,921.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,950.40 : 127,522.80 = 49,909.80 : x
  2. Step 2: Convert to fraction form
    84,950.40/127,522.80 = 49,909.80/x
  3. Step 3: Cross multiply
    84,950.40x = 127,522.80 × 49,909.80
  4. Step 4: Simplify right side
    84,950.40x = 6,364,637,443.44
  5. Step 5: Solve for x
    x = 6,364,637,443.44/84,950.40
  6. Step 6: Final answer
    x = 74,921.81

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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.