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Finding the Fourth Proportional to 65,202,145.20, 97,866,203.40 and 39,692,977.20

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Solution

The fourth proportional to 65,202,145.20, 97,866,203.40 and 39,692,977.20 is: 59,577,809.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,202,145.20 : 97,866,203.40 = 39,692,977.20 : x
  2. Step 2: Convert to fraction form
    65,202,145.20/97,866,203.40 = 39,692,977.20/x
  3. Step 3: Cross multiply
    65,202,145.20x = 97,866,203.40 × 39,692,977.20
  4. Step 4: Simplify right side
    65,202,145.20x = 3,884,600,980,206,763
  5. Step 5: Solve for x
    x = 3,884,600,980,206,763/65,202,145.20
  6. Step 6: Final answer
    x = 59,577,809.42

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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.