Home / 98,571.73-135,981.57-64,565.50

Finding the Fourth Proportional to 98,571.73, 135,981.57 and 64,565.50

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Solution

The fourth proportional to 98,571.73, 135,981.57 and 64,565.50 is: 89,069.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,571.73 : 135,981.57 = 64,565.50 : x
  2. Step 2: Convert to fraction form
    98,571.73/135,981.57 = 64,565.50/x
  3. Step 3: Cross multiply
    98,571.73x = 135,981.57 × 64,565.50
  4. Step 4: Simplify right side
    98,571.73x = 8,779,718,057.84
  5. Step 5: Solve for x
    x = 8,779,718,057.84/98,571.73
  6. Step 6: Final answer
    x = 89,069.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.