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Finding the Fourth Proportional to 66,568,987.60, 99,862,812.60 and 26,170,075.60

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Solution

The fourth proportional to 66,568,987.60, 99,862,812.60 and 26,170,075.60 is: 39,258,781.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,568,987.60 : 99,862,812.60 = 26,170,075.60 : x
  2. Step 2: Convert to fraction form
    66,568,987.60/99,862,812.60 = 26,170,075.60/x
  3. Step 3: Cross multiply
    66,568,987.60x = 99,862,812.60 × 26,170,075.60
  4. Step 4: Simplify right side
    66,568,987.60x = 2,613,417,355,370,632.50
  5. Step 5: Solve for x
    x = 2,613,417,355,370,632.50/66,568,987.60
  6. Step 6: Final answer
    x = 39,258,781.75

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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.