Home / 39,872,079-55,023,491.16-21,537,364.68

Finding the Fourth Proportional to 39,872,079, 55,023,491.16 and 21,537,364.68

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Solution

The fourth proportional to 39,872,079, 55,023,491.16 and 21,537,364.68 is: 29,721,575.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872,079 : 55,023,491.16 = 21,537,364.68 : x
  2. Step 2: Convert to fraction form
    39,872,079/55,023,491.16 = 21,537,364.68/x
  3. Step 3: Cross multiply
    39,872,079x = 55,023,491.16 × 21,537,364.68
  4. Step 4: Simplify right side
    39,872,079x = 1,185,060,995,079,676.25
  5. Step 5: Solve for x
    x = 1,185,060,995,079,676.25/39,872,079
  6. Step 6: Final answer
    x = 29,721,575.22

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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.