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Finding the Fourth Proportional to 71,075,432.75, 106,619,655.47 and 19,957,107.11

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Solution

The fourth proportional to 71,075,432.75, 106,619,655.47 and 19,957,107.11 is: 29,937,487.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,075,432.75 : 106,619,655.47 = 19,957,107.11 : x
  2. Step 2: Convert to fraction form
    71,075,432.75/106,619,655.47 = 19,957,107.11/x
  3. Step 3: Cross multiply
    71,075,432.75x = 106,619,655.47 × 19,957,107.11
  4. Step 4: Simplify right side
    71,075,432.75x = 2,127,819,883,613,203.75
  5. Step 5: Solve for x
    x = 2,127,819,883,613,203.75/71,075,432.75
  6. Step 6: Final answer
    x = 29,937,487.56

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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.