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Finding the Fourth Proportional to 78,952.45, 108,953.06 and 43,141.64

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Solution

The fourth proportional to 78,952.45, 108,953.06 and 43,141.64 is: 59,534.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,952.45 : 108,953.06 = 43,141.64 : x
  2. Step 2: Convert to fraction form
    78,952.45/108,953.06 = 43,141.64/x
  3. Step 3: Cross multiply
    78,952.45x = 108,953.06 × 43,141.64
  4. Step 4: Simplify right side
    78,952.45x = 4,700,413,254.51
  5. Step 5: Solve for x
    x = 4,700,413,254.51/78,952.45
  6. Step 6: Final answer
    x = 59,534.74

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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.