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Finding the Fourth Proportional to 58,628, 87,955.92 and 19,185.08

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Solution

The fourth proportional to 58,628, 87,955.92 and 19,185.08 is: 28,782.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,628 : 87,955.92 = 19,185.08 : x
  2. Step 2: Convert to fraction form
    58,628/87,955.92 = 19,185.08/x
  3. Step 3: Cross multiply
    58,628x = 87,955.92 × 19,185.08
  4. Step 4: Simplify right side
    58,628x = 1,687,441,361.67
  5. Step 5: Solve for x
    x = 1,687,441,361.67/58,628
  6. Step 6: Final answer
    x = 28,782.18

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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.