Home / 42,783.12-63,748.26-38,127.60

Finding the Fourth Proportional to 42,783.12, 63,748.26 and 38,127.60

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Solution

The fourth proportional to 42,783.12, 63,748.26 and 38,127.60 is: 56,811.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,783.12 : 63,748.26 = 38,127.60 : x
  2. Step 2: Convert to fraction form
    42,783.12/63,748.26 = 38,127.60/x
  3. Step 3: Cross multiply
    42,783.12x = 63,748.26 × 38,127.60
  4. Step 4: Simplify right side
    42,783.12x = 2,430,568,157.98
  5. Step 5: Solve for x
    x = 2,430,568,157.98/42,783.12
  6. Step 6: Final answer
    x = 56,811.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.