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Finding the Fourth Proportional to 47,356.40, 70,948.20 and 28,866.80

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Solution

The fourth proportional to 47,356.40, 70,948.20 and 28,866.80 is: 43,247.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,356.40 : 70,948.20 = 28,866.80 : x
  2. Step 2: Convert to fraction form
    47,356.40/70,948.20 = 28,866.80/x
  3. Step 3: Cross multiply
    47,356.40x = 70,948.20 × 28,866.80
  4. Step 4: Simplify right side
    47,356.40x = 2,048,047,499.76
  5. Step 5: Solve for x
    x = 2,048,047,499.76/47,356.40
  6. Step 6: Final answer
    x = 43,247.53

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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.