Home / 56,985.60-78,612.48-40,181.76

Finding the Fourth Proportional to 56,985.60, 78,612.48 and 40,181.76

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Solution

The fourth proportional to 56,985.60, 78,612.48 and 40,181.76 is: 55,431.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,985.60 : 78,612.48 = 40,181.76 : x
  2. Step 2: Convert to fraction form
    56,985.60/78,612.48 = 40,181.76/x
  3. Step 3: Cross multiply
    56,985.60x = 78,612.48 × 40,181.76
  4. Step 4: Simplify right side
    56,985.60x = 3,158,787,804.36
  5. Step 5: Solve for x
    x = 3,158,787,804.36/56,985.60
  6. Step 6: Final answer
    x = 55,431.33

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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.