Home / 77,243.22-115,886.70-45,681.30

Finding the Fourth Proportional to 77,243.22, 115,886.70 and 45,681.30

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Solution

The fourth proportional to 77,243.22, 115,886.70 and 45,681.30 is: 68,534.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,243.22 : 115,886.70 = 45,681.30 : x
  2. Step 2: Convert to fraction form
    77,243.22/115,886.70 = 45,681.30/x
  3. Step 3: Cross multiply
    77,243.22x = 115,886.70 × 45,681.30
  4. Step 4: Simplify right side
    77,243.22x = 5,293,855,108.71
  5. Step 5: Solve for x
    x = 5,293,855,108.71/77,243.22
  6. Step 6: Final answer
    x = 68,534.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.