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Finding the Fourth Proportional to 65,718.60, 98,448.30 and 37,984.20

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Solution

The fourth proportional to 65,718.60, 98,448.30 and 37,984.20 is: 56,901.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,718.60 : 98,448.30 = 37,984.20 : x
  2. Step 2: Convert to fraction form
    65,718.60/98,448.30 = 37,984.20/x
  3. Step 3: Cross multiply
    65,718.60x = 98,448.30 × 37,984.20
  4. Step 4: Simplify right side
    65,718.60x = 3,739,479,916.86
  5. Step 5: Solve for x
    x = 3,739,479,916.86/65,718.60
  6. Step 6: Final answer
    x = 56,901.39

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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.