Home / 81,018,646.29-121,527,975.56-19,607,815.44

Finding the Fourth Proportional to 81,018,646.29, 121,527,975.56 and 19,607,815.44

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Solution

The fourth proportional to 81,018,646.29, 121,527,975.56 and 19,607,815.44 is: 29,411,724.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,018,646.29 : 121,527,975.56 = 19,607,815.44 : x
  2. Step 2: Convert to fraction form
    81,018,646.29/121,527,975.56 = 19,607,815.44/x
  3. Step 3: Cross multiply
    81,018,646.29x = 121,527,975.56 × 19,607,815.44
  4. Step 4: Simplify right side
    81,018,646.29x = 2,382,898,115,479,272
  5. Step 5: Solve for x
    x = 2,382,898,115,479,272/81,018,646.29
  6. Step 6: Final answer
    x = 29,411,724.64

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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.