Home / 78,678.34-117,903.03-48,628.42

Finding the Fourth Proportional to 78,678.34, 117,903.03 and 48,628.42

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Solution

The fourth proportional to 78,678.34, 117,903.03 and 48,628.42 is: 72,871.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,678.34 : 117,903.03 = 48,628.42 : x
  2. Step 2: Convert to fraction form
    78,678.34/117,903.03 = 48,628.42/x
  3. Step 3: Cross multiply
    78,678.34x = 117,903.03 × 48,628.42
  4. Step 4: Simplify right side
    78,678.34x = 5,733,438,062.11
  5. Step 5: Solve for x
    x = 5,733,438,062.11/78,678.34
  6. Step 6: Final answer
    x = 72,871.87

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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.