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Finding the Fourth Proportional to 55,555.65, 76,656.06 and 31,681.71

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Solution

The fourth proportional to 55,555.65, 76,656.06 and 31,681.71 is: 43,714.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,555.65 : 76,656.06 = 31,681.71 : x
  2. Step 2: Convert to fraction form
    55,555.65/76,656.06 = 31,681.71/x
  3. Step 3: Cross multiply
    55,555.65x = 76,656.06 × 31,681.71
  4. Step 4: Simplify right side
    55,555.65x = 2,428,595,062.66
  5. Step 5: Solve for x
    x = 2,428,595,062.66/55,555.65
  6. Step 6: Final answer
    x = 43,714.64

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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.