Home / 38,420,689.12-53,020,971.66-21,017,034.52

Finding the Fourth Proportional to 38,420,689.12, 53,020,971.66 and 21,017,034.52

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Solution

The fourth proportional to 38,420,689.12, 53,020,971.66 and 21,017,034.52 is: 29,003,737.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,420,689.12 : 53,020,971.66 = 21,017,034.52 : x
  2. Step 2: Convert to fraction form
    38,420,689.12/53,020,971.66 = 21,017,034.52/x
  3. Step 3: Cross multiply
    38,420,689.12x = 53,020,971.66 × 21,017,034.52
  4. Step 4: Simplify right side
    38,420,689.12x = 1,114,343,591,662,161.62
  5. Step 5: Solve for x
    x = 1,114,343,591,662,161.62/38,420,689.12
  6. Step 6: Final answer
    x = 29,003,737.76

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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.