Home / 105,559.47-145,672.29-57,161.93

Finding the Fourth Proportional to 105,559.47, 145,672.29 and 57,161.93

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Solution

The fourth proportional to 105,559.47, 145,672.29 and 57,161.93 is: 78,883.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,559.47 : 145,672.29 = 57,161.93 : x
  2. Step 2: Convert to fraction form
    105,559.47/145,672.29 = 57,161.93/x
  3. Step 3: Cross multiply
    105,559.47x = 145,672.29 × 57,161.93
  4. Step 4: Simplify right side
    105,559.47x = 8,326,908,515.56
  5. Step 5: Solve for x
    x = 8,326,908,515.56/105,559.47
  6. Step 6: Final answer
    x = 78,883.58

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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.