Home / 39,872,019-55,023,408.08-21,537,304.52

Finding the Fourth Proportional to 39,872,019, 55,023,408.08 and 21,537,304.52

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Solution

The fourth proportional to 39,872,019, 55,023,408.08 and 21,537,304.52 is: 29,721,492.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872,019 : 55,023,408.08 = 21,537,304.52 : x
  2. Step 2: Convert to fraction form
    39,872,019/55,023,408.08 = 21,537,304.52/x
  3. Step 3: Cross multiply
    39,872,019x = 55,023,408.08 × 21,537,304.52
  4. Step 4: Simplify right side
    39,872,019x = 1,185,055,895,547,188.50
  5. Step 5: Solve for x
    x = 1,185,055,895,547,188.50/39,872,019
  6. Step 6: Final answer
    x = 29,721,492.05

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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.