Home / 65,490.86-98,255.46-21,116.72

Finding the Fourth Proportional to 65,490.86, 98,255.46 and 21,116.72

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Solution

The fourth proportional to 65,490.86, 98,255.46 and 21,116.72 is: 31,681.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,490.86 : 98,255.46 = 21,116.72 : x
  2. Step 2: Convert to fraction form
    65,490.86/98,255.46 = 21,116.72/x
  3. Step 3: Cross multiply
    65,490.86x = 98,255.46 × 21,116.72
  4. Step 4: Simplify right side
    65,490.86x = 2,074,833,037.29
  5. Step 5: Solve for x
    x = 2,074,833,037.29/65,490.86
  6. Step 6: Final answer
    x = 31,681.26

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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.