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Finding the Fourth Proportional to 66,069.70, 99,117.35 and 28,629.70

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Solution

The fourth proportional to 66,069.70, 99,117.35 and 28,629.70 is: 42,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,069.70 : 99,117.35 = 28,629.70 : x
  2. Step 2: Convert to fraction form
    66,069.70/99,117.35 = 28,629.70/x
  3. Step 3: Cross multiply
    66,069.70x = 99,117.35 × 28,629.70
  4. Step 4: Simplify right side
    66,069.70x = 2,837,699,995.30
  5. Step 5: Solve for x
    x = 2,837,699,995.30/66,069.70
  6. Step 6: Final answer
    x = 42,950.10

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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.