Home / 66,428,851.70-99,624,615.15-21,004,570.10

Finding the Fourth Proportional to 66,428,851.70, 99,624,615.15 and 21,004,570.10

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Solution

The fourth proportional to 66,428,851.70, 99,624,615.15 and 21,004,570.10 is: 31,500,954.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428,851.70 : 99,624,615.15 = 21,004,570.10 : x
  2. Step 2: Convert to fraction form
    66,428,851.70/99,624,615.15 = 21,004,570.10/x
  3. Step 3: Cross multiply
    66,428,851.70x = 99,624,615.15 × 21,004,570.10
  4. Step 4: Simplify right side
    66,428,851.70x = 2,092,572,212,603,697.25
  5. Step 5: Solve for x
    x = 2,092,572,212,603,697.25/66,428,851.70
  6. Step 6: Final answer
    x = 31,500,954.16

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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.