Home / 39,872,095-55,023,513.24-21,537,380.68

Finding the Fourth Proportional to 39,872,095, 55,023,513.24 and 21,537,380.68

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Solution

The fourth proportional to 39,872,095, 55,023,513.24 and 21,537,380.68 is: 29,721,597.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872,095 : 55,023,513.24 = 21,537,380.68 : x
  2. Step 2: Convert to fraction form
    39,872,095/55,023,513.24 = 21,537,380.68/x
  3. Step 3: Cross multiply
    39,872,095x = 55,023,513.24 × 21,537,380.68
  4. Step 4: Simplify right side
    39,872,095x = 1,185,062,351,000,900.25
  5. Step 5: Solve for x
    x = 1,185,062,351,000,900.25/39,872,095
  6. Step 6: Final answer
    x = 29,721,597.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.