Home / 57,041.08-78,719.28-31,890.60

Finding the Fourth Proportional to 57,041.08, 78,719.28 and 31,890.60

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Solution

The fourth proportional to 57,041.08, 78,719.28 and 31,890.60 is: 44,010.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,041.08 : 78,719.28 = 31,890.60 : x
  2. Step 2: Convert to fraction form
    57,041.08/78,719.28 = 31,890.60/x
  3. Step 3: Cross multiply
    57,041.08x = 78,719.28 × 31,890.60
  4. Step 4: Simplify right side
    57,041.08x = 2,510,405,070.77
  5. Step 5: Solve for x
    x = 2,510,405,070.77/57,041.08
  6. Step 6: Final answer
    x = 44,010.48

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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.