Home / 51,431.63-70,985.36-29,075.63

Finding the Fourth Proportional to 51,431.63, 70,985.36 and 29,075.63

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Solution

The fourth proportional to 51,431.63, 70,985.36 and 29,075.63 is: 40,129.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.63 : 70,985.36 = 29,075.63 : x
  2. Step 2: Convert to fraction form
    51,431.63/70,985.36 = 29,075.63/x
  3. Step 3: Cross multiply
    51,431.63x = 70,985.36 × 29,075.63
  4. Step 4: Simplify right side
    51,431.63x = 2,063,943,780.54
  5. Step 5: Solve for x
    x = 2,063,943,780.54/51,431.63
  6. Step 6: Final answer
    x = 40,129.86

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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.