Home / 79,438,698.72-119,157,873.09-21,146,389.77

Finding the Fourth Proportional to 79,438,698.72, 119,157,873.09 and 21,146,389.77

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Solution

The fourth proportional to 79,438,698.72, 119,157,873.09 and 21,146,389.77 is: 31,719,538.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,438,698.72 : 119,157,873.09 = 21,146,389.77 : x
  2. Step 2: Convert to fraction form
    79,438,698.72/119,157,873.09 = 21,146,389.77/x
  3. Step 3: Cross multiply
    79,438,698.72x = 119,157,873.09 × 21,146,389.77
  4. Step 4: Simplify right side
    79,438,698.72x = 2,519,758,828,525,334.50
  5. Step 5: Solve for x
    x = 2,519,758,828,525,334.50/79,438,698.72
  6. Step 6: Final answer
    x = 31,719,538.07

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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.