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Finding the Fourth Proportional to 45,420.65, 63,640.75 and 45,420.65

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Solution

The fourth proportional to 45,420.65, 63,640.75 and 45,420.65 is: 63,640.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,420.65 : 63,640.75 = 45,420.65 : x
  2. Step 2: Convert to fraction form
    45,420.65/63,640.75 = 45,420.65/x
  3. Step 3: Cross multiply
    45,420.65x = 63,640.75 × 45,420.65
  4. Step 4: Simplify right side
    45,420.65x = 2,890,604,231.49
  5. Step 5: Solve for x
    x = 2,890,604,231.49/45,420.65
  6. Step 6: Final answer
    x = 63,640.75

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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.