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Finding the Fourth Proportional to 70,491,762.97, 105,738,373.51 and 21,308,024.04

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Solution

The fourth proportional to 70,491,762.97, 105,738,373.51 and 21,308,024.04 is: 31,962,256.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,491,762.97 : 105,738,373.51 = 21,308,024.04 : x
  2. Step 2: Convert to fraction form
    70,491,762.97/105,738,373.51 = 21,308,024.04/x
  3. Step 3: Cross multiply
    70,491,762.97x = 105,738,373.51 × 21,308,024.04
  4. Step 4: Simplify right side
    70,491,762.97x = 2,253,075,804,370,733
  5. Step 5: Solve for x
    x = 2,253,075,804,370,733/70,491,762.97
  6. Step 6: Final answer
    x = 31,962,256.43

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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.