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Finding the Fourth Proportional to 66,277.80, 99,416.70 and 48,781.80

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Solution

The fourth proportional to 66,277.80, 99,416.70 and 48,781.80 is: 73,172.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,277.80 : 99,416.70 = 48,781.80 : x
  2. Step 2: Convert to fraction form
    66,277.80/99,416.70 = 48,781.80/x
  3. Step 3: Cross multiply
    66,277.80x = 99,416.70 × 48,781.80
  4. Step 4: Simplify right side
    66,277.80x = 4,849,725,576.06
  5. Step 5: Solve for x
    x = 4,849,725,576.06/66,277.80
  6. Step 6: Final answer
    x = 73,172.70

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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.