Home / 68,830,858.68-103,249,718.75-19,654,005.72

Finding the Fourth Proportional to 68,830,858.68, 103,249,718.75 and 19,654,005.72

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Solution

The fourth proportional to 68,830,858.68, 103,249,718.75 and 19,654,005.72 is: 29,481,988.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,830,858.68 : 103,249,718.75 = 19,654,005.72 : x
  2. Step 2: Convert to fraction form
    68,830,858.68/103,249,718.75 = 19,654,005.72/x
  3. Step 3: Cross multiply
    68,830,858.68x = 103,249,718.75 × 19,654,005.72
  4. Step 4: Simplify right side
    68,830,858.68x = 2,029,270,562,900,891.25
  5. Step 5: Solve for x
    x = 2,029,270,562,900,891.25/68,830,858.68
  6. Step 6: Final answer
    x = 29,481,988.19

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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.