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Finding the Fourth Proportional to 64,399.51, 96,599.31 and 51,860.71

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Solution

The fourth proportional to 64,399.51, 96,599.31 and 51,860.71 is: 77,791.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,399.51 : 96,599.31 = 51,860.71 : x
  2. Step 2: Convert to fraction form
    64,399.51/96,599.31 = 51,860.71/x
  3. Step 3: Cross multiply
    64,399.51x = 96,599.31 × 51,860.71
  4. Step 4: Simplify right side
    64,399.51x = 5,009,708,802.11
  5. Step 5: Solve for x
    x = 5,009,708,802.11/64,399.51
  6. Step 6: Final answer
    x = 77,791.10

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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.