Home / 78,938.34-108,936.48-43,130.58

Finding the Fourth Proportional to 78,938.34, 108,936.48 and 43,130.58

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Solution

The fourth proportional to 78,938.34, 108,936.48 and 43,130.58 is: 59,521.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938.34 : 108,936.48 = 43,130.58 : x
  2. Step 2: Convert to fraction form
    78,938.34/108,936.48 = 43,130.58/x
  3. Step 3: Cross multiply
    78,938.34x = 108,936.48 × 43,130.58
  4. Step 4: Simplify right side
    78,938.34x = 4,698,493,565.56
  5. Step 5: Solve for x
    x = 4,698,493,565.56/78,938.34
  6. Step 6: Final answer
    x = 59,521.06

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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.