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Finding the Fourth Proportional to 65,875.71, 98,619.77 and 40,835.37

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Solution

The fourth proportional to 65,875.71, 98,619.77 and 40,835.37 is: 61,132.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,875.71 : 98,619.77 = 40,835.37 : x
  2. Step 2: Convert to fraction form
    65,875.71/98,619.77 = 40,835.37/x
  3. Step 3: Cross multiply
    65,875.71x = 98,619.77 × 40,835.37
  4. Step 4: Simplify right side
    65,875.71x = 4,027,174,099.99
  5. Step 5: Solve for x
    x = 4,027,174,099.99/65,875.71
  6. Step 6: Final answer
    x = 61,132.92

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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.