Home / 56,542.31-78,025.34-31,390.19

Finding the Fourth Proportional to 56,542.31, 78,025.34 and 31,390.19

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Solution

The fourth proportional to 56,542.31, 78,025.34 and 31,390.19 is: 43,316.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,542.31 : 78,025.34 = 31,390.19 : x
  2. Step 2: Convert to fraction form
    56,542.31/78,025.34 = 31,390.19/x
  3. Step 3: Cross multiply
    56,542.31x = 78,025.34 × 31,390.19
  4. Step 4: Simplify right side
    56,542.31x = 2,449,230,013.11
  5. Step 5: Solve for x
    x = 2,449,230,013.11/56,542.31
  6. Step 6: Final answer
    x = 43,316.77

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1.5x scale

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.