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Finding the Fourth Proportional to 46,777.60, 70,144.80 and 20,468.80

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Solution

The fourth proportional to 46,777.60, 70,144.80 and 20,468.80 is: 30,693.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,777.60 : 70,144.80 = 20,468.80 : x
  2. Step 2: Convert to fraction form
    46,777.60/70,144.80 = 20,468.80/x
  3. Step 3: Cross multiply
    46,777.60x = 70,144.80 × 20,468.80
  4. Step 4: Simplify right side
    46,777.60x = 1,435,779,882.24
  5. Step 5: Solve for x
    x = 1,435,779,882.24/46,777.60
  6. Step 6: Final answer
    x = 30,693.75

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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.