Home / 77,237.51-115,716.38-64,837.22

Finding the Fourth Proportional to 77,237.51, 115,716.38 and 64,837.22

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Solution

The fourth proportional to 77,237.51, 115,716.38 and 64,837.22 is: 97,138.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,237.51 : 115,716.38 = 64,837.22 : x
  2. Step 2: Convert to fraction form
    77,237.51/115,716.38 = 64,837.22/x
  3. Step 3: Cross multiply
    77,237.51x = 115,716.38 × 64,837.22
  4. Step 4: Simplify right side
    77,237.51x = 7,502,727,484.90
  5. Step 5: Solve for x
    x = 7,502,727,484.90/77,237.51
  6. Step 6: Final answer
    x = 97,138.40

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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.