Home / 78,988.66-109,004.34-43,178.82

Finding the Fourth Proportional to 78,988.66, 109,004.34 and 43,178.82

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Solution

The fourth proportional to 78,988.66, 109,004.34 and 43,178.82 is: 59,586.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,988.66 : 109,004.34 = 43,178.82 : x
  2. Step 2: Convert to fraction form
    78,988.66/109,004.34 = 43,178.82/x
  3. Step 3: Cross multiply
    78,988.66x = 109,004.34 × 43,178.82
  4. Step 4: Simplify right side
    78,988.66x = 4,706,678,776.08
  5. Step 5: Solve for x
    x = 4,706,678,776.08/78,988.66
  6. Step 6: Final answer
    x = 59,586.77

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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.