Home / 97,861.80-135,044.77-55,420.64

Finding the Fourth Proportional to 97,861.80, 135,044.77 and 55,420.64

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Solution

The fourth proportional to 97,861.80, 135,044.77 and 55,420.64 is: 76,477.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,861.80 : 135,044.77 = 55,420.64 : x
  2. Step 2: Convert to fraction form
    97,861.80/135,044.77 = 55,420.64/x
  3. Step 3: Cross multiply
    97,861.80x = 135,044.77 × 55,420.64
  4. Step 4: Simplify right side
    97,861.80x = 7,484,267,378.61
  5. Step 5: Solve for x
    x = 7,484,267,378.61/97,861.80
  6. Step 6: Final answer
    x = 76,477.92

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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.