Home / 81,678,005.10-122,517,007.65-38,631,284.10

Finding the Fourth Proportional to 81,678,005.10, 122,517,007.65 and 38,631,284.10

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Solution

The fourth proportional to 81,678,005.10, 122,517,007.65 and 38,631,284.10 is: 57,946,926.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,678,005.10 : 122,517,007.65 = 38,631,284.10 : x
  2. Step 2: Convert to fraction form
    81,678,005.10/122,517,007.65 = 38,631,284.10/x
  3. Step 3: Cross multiply
    81,678,005.10x = 122,517,007.65 × 38,631,284.10
  4. Step 4: Simplify right side
    81,678,005.10x = 4,732,989,329,609,024
  5. Step 5: Solve for x
    x = 4,732,989,329,609,024/81,678,005.10
  6. Step 6: Final answer
    x = 57,946,926.15

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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.