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Finding the Fourth Proportional to 48,405.74, 72,621.57 and 43,779.02

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Solution

The fourth proportional to 48,405.74, 72,621.57 and 43,779.02 is: 65,680.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,405.74 : 72,621.57 = 43,779.02 : x
  2. Step 2: Convert to fraction form
    48,405.74/72,621.57 = 43,779.02/x
  3. Step 3: Cross multiply
    48,405.74x = 72,621.57 × 43,779.02
  4. Step 4: Simplify right side
    48,405.74x = 3,179,301,165.46
  5. Step 5: Solve for x
    x = 3,179,301,165.46/48,405.74
  6. Step 6: Final answer
    x = 65,680.25

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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.