Home / 79,438,696.71-119,157,870.10-21,146,387.77

Finding the Fourth Proportional to 79,438,696.71, 119,157,870.10 and 21,146,387.77

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Solution

The fourth proportional to 79,438,696.71, 119,157,870.10 and 21,146,387.77 is: 31,719,535.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,438,696.71 : 119,157,870.10 = 21,146,387.77 : x
  2. Step 2: Convert to fraction form
    79,438,696.71/119,157,870.10 = 21,146,387.77/x
  3. Step 3: Cross multiply
    79,438,696.71x = 119,157,870.10 × 21,146,387.77
  4. Step 4: Simplify right side
    79,438,696.71x = 2,519,758,526,981,888.50
  5. Step 5: Solve for x
    x = 2,519,758,526,981,888.50/79,438,696.71
  6. Step 6: Final answer
    x = 31,719,535.08

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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.