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Finding the Fourth Proportional to 58,800.81, 81,100.41 and 40,681.68

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Solution

The fourth proportional to 58,800.81, 81,100.41 and 40,681.68 is: 56,109.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,800.81 : 81,100.41 = 40,681.68 : x
  2. Step 2: Convert to fraction form
    58,800.81/81,100.41 = 40,681.68/x
  3. Step 3: Cross multiply
    58,800.81x = 81,100.41 × 40,681.68
  4. Step 4: Simplify right side
    58,800.81x = 3,299,300,927.49
  5. Step 5: Solve for x
    x = 3,299,300,927.49/58,800.81
  6. Step 6: Final answer
    x = 56,109.79

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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.