Home / 105,685.41-145,851.84-62,690.43

Finding the Fourth Proportional to 105,685.41, 145,851.84 and 62,690.43

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Solution

The fourth proportional to 105,685.41, 145,851.84 and 62,690.43 is: 86,516.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,685.41 : 145,851.84 = 62,690.43 : x
  2. Step 2: Convert to fraction form
    105,685.41/145,851.84 = 62,690.43/x
  3. Step 3: Cross multiply
    105,685.41x = 145,851.84 × 62,690.43
  4. Step 4: Simplify right side
    105,685.41x = 9,143,514,565.89
  5. Step 5: Solve for x
    x = 9,143,514,565.89/105,685.41
  6. Step 6: Final answer
    x = 86,516.34

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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.