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Finding the Fourth Proportional to 101,768.81, 140,457.77 and 56,461.39

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Solution

The fourth proportional to 101,768.81, 140,457.77 and 56,461.39 is: 77,926.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,768.81 : 140,457.77 = 56,461.39 : x
  2. Step 2: Convert to fraction form
    101,768.81/140,457.77 = 56,461.39/x
  3. Step 3: Cross multiply
    101,768.81x = 140,457.77 × 56,461.39
  4. Step 4: Simplify right side
    101,768.81x = 7,930,440,930.50
  5. Step 5: Solve for x
    x = 7,930,440,930.50/101,768.81
  6. Step 6: Final answer
    x = 77,926.05

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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.