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Finding the Fourth Proportional to 66,914.40, 100,762.80 and 49,506.72

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Solution

The fourth proportional to 66,914.40, 100,762.80 and 49,506.72 is: 74,549.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,914.40 : 100,762.80 = 49,506.72 : x
  2. Step 2: Convert to fraction form
    66,914.40/100,762.80 = 49,506.72/x
  3. Step 3: Cross multiply
    66,914.40x = 100,762.80 × 49,506.72
  4. Step 4: Simplify right side
    66,914.40x = 4,988,435,726.02
  5. Step 5: Solve for x
    x = 4,988,435,726.02/66,914.40
  6. Step 6: Final answer
    x = 74,549.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.