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Finding the Fourth Proportional to 58,378, 87,558.80 and 18,935.46

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Solution

The fourth proportional to 58,378, 87,558.80 and 18,935.46 is: 28,400.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,378 : 87,558.80 = 18,935.46 : x
  2. Step 2: Convert to fraction form
    58,378/87,558.80 = 18,935.46/x
  3. Step 3: Cross multiply
    58,378x = 87,558.80 × 18,935.46
  4. Step 4: Simplify right side
    58,378x = 1,657,965,622.58
  5. Step 5: Solve for x
    x = 1,657,965,622.58/58,378
  6. Step 6: Final answer
    x = 28,400.52

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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.