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Finding the Fourth Proportional to 58,643.80, 87,965.80 and 14,270.58

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Solution

The fourth proportional to 58,643.80, 87,965.80 and 14,270.58 is: 21,405.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,643.80 : 87,965.80 = 14,270.58 : x
  2. Step 2: Convert to fraction form
    58,643.80/87,965.80 = 14,270.58/x
  3. Step 3: Cross multiply
    58,643.80x = 87,965.80 × 14,270.58
  4. Step 4: Simplify right side
    58,643.80x = 1,255,322,950.49
  5. Step 5: Solve for x
    x = 1,255,322,950.49/58,643.80
  6. Step 6: Final answer
    x = 21,405.89

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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.