Home / 78,782.05-118,190.67-28,861.12

Finding the Fourth Proportional to 78,782.05, 118,190.67 and 28,861.12

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Solution

The fourth proportional to 78,782.05, 118,190.67 and 28,861.12 is: 43,298.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,782.05 : 118,190.67 = 28,861.12 : x
  2. Step 2: Convert to fraction form
    78,782.05/118,190.67 = 28,861.12/x
  3. Step 3: Cross multiply
    78,782.05x = 118,190.67 × 28,861.12
  4. Step 4: Simplify right side
    78,782.05x = 3,411,115,109.75
  5. Step 5: Solve for x
    x = 3,411,115,109.75/78,782.05
  6. Step 6: Final answer
    x = 43,298.13

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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.