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Finding the Fourth Proportional to 47,259.20, 70,888.80 and 40,692.80

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Solution

The fourth proportional to 47,259.20, 70,888.80 and 40,692.80 is: 61,039.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,259.20 : 70,888.80 = 40,692.80 : x
  2. Step 2: Convert to fraction form
    47,259.20/70,888.80 = 40,692.80/x
  3. Step 3: Cross multiply
    47,259.20x = 70,888.80 × 40,692.80
  4. Step 4: Simplify right side
    47,259.20x = 2,884,663,760.64
  5. Step 5: Solve for x
    x = 2,884,663,760.64/47,259.20
  6. Step 6: Final answer
    x = 61,039.20

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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.