Home / 66,398.08-91,621.64-40,543.64

Finding the Fourth Proportional to 66,398.08, 91,621.64 and 40,543.64

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Solution

The fourth proportional to 66,398.08, 91,621.64 and 40,543.64 is: 55,945.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,398.08 : 91,621.64 = 40,543.64 : x
  2. Step 2: Convert to fraction form
    66,398.08/91,621.64 = 40,543.64/x
  3. Step 3: Cross multiply
    66,398.08x = 91,621.64 × 40,543.64
  4. Step 4: Simplify right side
    66,398.08x = 3,714,674,788.37
  5. Step 5: Solve for x
    x = 3,714,674,788.37/66,398.08
  6. Step 6: Final answer
    x = 55,945.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.