Home / 78,923.04-118,441.80-31,511.04

Finding the Fourth Proportional to 78,923.04, 118,441.80 and 31,511.04

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Solution

The fourth proportional to 78,923.04, 118,441.80 and 31,511.04 is: 47,289.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,923.04 : 118,441.80 = 31,511.04 : x
  2. Step 2: Convert to fraction form
    78,923.04/118,441.80 = 31,511.04/x
  3. Step 3: Cross multiply
    78,923.04x = 118,441.80 × 31,511.04
  4. Step 4: Simplify right side
    78,923.04x = 3,732,224,297.47
  5. Step 5: Solve for x
    x = 3,732,224,297.47/78,923.04
  6. Step 6: Final answer
    x = 47,289.41

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1.5x scale

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.