Home / 39,872,099.50-55,023,519.45-21,537,385.18

Finding the Fourth Proportional to 39,872,099.50, 55,023,519.45 and 21,537,385.18

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Solution

The fourth proportional to 39,872,099.50, 55,023,519.45 and 21,537,385.18 is: 29,721,603.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872,099.50 : 55,023,519.45 = 21,537,385.18 : x
  2. Step 2: Convert to fraction form
    39,872,099.50/55,023,519.45 = 21,537,385.18/x
  3. Step 3: Cross multiply
    39,872,099.50x = 55,023,519.45 × 21,537,385.18
  4. Step 4: Simplify right side
    39,872,099.50x = 1,185,062,732,353,871.75
  5. Step 5: Solve for x
    x = 1,185,062,732,353,871.75/39,872,099.50
  6. Step 6: Final answer
    x = 29,721,603.51

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1.5x scale

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.