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Finding the Fourth Proportional to 98,763.60, 148,015.80 and 39,550.80

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Solution

The fourth proportional to 98,763.60, 148,015.80 and 39,550.80 is: 59,274.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,763.60 : 148,015.80 = 39,550.80 : x
  2. Step 2: Convert to fraction form
    98,763.60/148,015.80 = 39,550.80/x
  3. Step 3: Cross multiply
    98,763.60x = 148,015.80 × 39,550.80
  4. Step 4: Simplify right side
    98,763.60x = 5,854,143,302.64
  5. Step 5: Solve for x
    x = 5,854,143,302.64/98,763.60
  6. Step 6: Final answer
    x = 59,274.30

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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.