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Finding the Fourth Proportional to 76,953.50, 106,240 and 58,660.64

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Solution

The fourth proportional to 76,953.50, 106,240 and 58,660.64 is: 80,985.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,953.50 : 106,240 = 58,660.64 : x
  2. Step 2: Convert to fraction form
    76,953.50/106,240 = 58,660.64/x
  3. Step 3: Cross multiply
    76,953.50x = 106,240 × 58,660.64
  4. Step 4: Simplify right side
    76,953.50x = 6,232,106,393.60
  5. Step 5: Solve for x
    x = 6,232,106,393.60/76,953.50
  6. Step 6: Final answer
    x = 80,985.35

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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.