Home / 78,747.06-118,037.04-38,709.58

Finding the Fourth Proportional to 78,747.06, 118,037.04 and 38,709.58

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Solution

The fourth proportional to 78,747.06, 118,037.04 and 38,709.58 is: 58,023.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,747.06 : 118,037.04 = 38,709.58 : x
  2. Step 2: Convert to fraction form
    78,747.06/118,037.04 = 38,709.58/x
  3. Step 3: Cross multiply
    78,747.06x = 118,037.04 × 38,709.58
  4. Step 4: Simplify right side
    78,747.06x = 4,569,164,242.84
  5. Step 5: Solve for x
    x = 4,569,164,242.84/78,747.06
  6. Step 6: Final answer
    x = 58,023.30

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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.