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Finding the Fourth Proportional to 74,888.80, 112,002.72 and 66,626.80

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Solution

The fourth proportional to 74,888.80, 112,002.72 and 66,626.80 is: 99,646.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,888.80 : 112,002.72 = 66,626.80 : x
  2. Step 2: Convert to fraction form
    74,888.80/112,002.72 = 66,626.80/x
  3. Step 3: Cross multiply
    74,888.80x = 112,002.72 × 66,626.80
  4. Step 4: Simplify right side
    74,888.80x = 7,462,382,824.90
  5. Step 5: Solve for x
    x = 7,462,382,824.90/74,888.80
  6. Step 6: Final answer
    x = 99,646.18

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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.