Home / 65,686.19-98,529.24-21,312.95

Finding the Fourth Proportional to 65,686.19, 98,529.24 and 21,312.95

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Solution

The fourth proportional to 65,686.19, 98,529.24 and 21,312.95 is: 31,969.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,686.19 : 98,529.24 = 21,312.95 : x
  2. Step 2: Convert to fraction form
    65,686.19/98,529.24 = 21,312.95/x
  3. Step 3: Cross multiply
    65,686.19x = 98,529.24 × 21,312.95
  4. Step 4: Simplify right side
    65,686.19x = 2,099,948,273.01
  5. Step 5: Solve for x
    x = 2,099,948,273.01/65,686.19
  6. Step 6: Final answer
    x = 31,969.41

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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.