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Finding the Fourth Proportional to 66,021.40, 99,080.70 and 26,606.80

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Solution

The fourth proportional to 66,021.40, 99,080.70 and 26,606.80 is: 39,929.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,021.40 : 99,080.70 = 26,606.80 : x
  2. Step 2: Convert to fraction form
    66,021.40/99,080.70 = 26,606.80/x
  3. Step 3: Cross multiply
    66,021.40x = 99,080.70 × 26,606.80
  4. Step 4: Simplify right side
    66,021.40x = 2,636,220,368.76
  5. Step 5: Solve for x
    x = 2,636,220,368.76/66,021.40
  6. Step 6: Final answer
    x = 39,929.79

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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.