Home / 81,870,488.09-122,432,726.91-61,135,487.10

Finding the Fourth Proportional to 81,870,488.09, 122,432,726.91 and 61,135,487.10

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Solution

The fourth proportional to 81,870,488.09, 122,432,726.91 and 61,135,487.10 is: 91,424,694.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,870,488.09 : 122,432,726.91 = 61,135,487.10 : x
  2. Step 2: Convert to fraction form
    81,870,488.09/122,432,726.91 = 61,135,487.10/x
  3. Step 3: Cross multiply
    81,870,488.09x = 122,432,726.91 × 61,135,487.10
  4. Step 4: Simplify right side
    81,870,488.09x = 7,484,984,396,624,128
  5. Step 5: Solve for x
    x = 7,484,984,396,624,128/81,870,488.09
  6. Step 6: Final answer
    x = 91,424,694.93

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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.