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Finding the Fourth Proportional to 45,768.80, 63,920.80 and 45,768.80

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Solution

The fourth proportional to 45,768.80, 63,920.80 and 45,768.80 is: 63,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,768.80 : 63,920.80 = 45,768.80 : x
  2. Step 2: Convert to fraction form
    45,768.80/63,920.80 = 45,768.80/x
  3. Step 3: Cross multiply
    45,768.80x = 63,920.80 × 45,768.80
  4. Step 4: Simplify right side
    45,768.80x = 2,925,578,311.04
  5. Step 5: Solve for x
    x = 2,925,578,311.04/45,768.80
  6. Step 6: Final answer
    x = 63,920.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.