Home / 77,939.04-107,530.50-47,692.80

Finding the Fourth Proportional to 77,939.04, 107,530.50 and 47,692.80

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Solution

The fourth proportional to 77,939.04, 107,530.50 and 47,692.80 is: 65,800.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,939.04 : 107,530.50 = 47,692.80 : x
  2. Step 2: Convert to fraction form
    77,939.04/107,530.50 = 47,692.80/x
  3. Step 3: Cross multiply
    77,939.04x = 107,530.50 × 47,692.80
  4. Step 4: Simplify right side
    77,939.04x = 5,128,430,630.40
  5. Step 5: Solve for x
    x = 5,128,430,630.40/77,939.04
  6. Step 6: Final answer
    x = 65,800.54

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1.5x scale

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.