Home / 72,778,276.80-109,167,415.20-18,925,588.80

Finding the Fourth Proportional to 72,778,276.80, 109,167,415.20 and 18,925,588.80

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Solution

The fourth proportional to 72,778,276.80, 109,167,415.20 and 18,925,588.80 is: 28,388,383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,778,276.80 : 109,167,415.20 = 18,925,588.80 : x
  2. Step 2: Convert to fraction form
    72,778,276.80/109,167,415.20 = 18,925,588.80/x
  3. Step 3: Cross multiply
    72,778,276.80x = 109,167,415.20 × 18,925,588.80
  4. Step 4: Simplify right side
    72,778,276.80x = 2,066,057,610,434,070
  5. Step 5: Solve for x
    x = 2,066,057,610,434,070/72,778,276.80
  6. Step 6: Final answer
    x = 28,388,383.20

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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.