Home / 56,826.86-78,420.43-31,335.45

Finding the Fourth Proportional to 56,826.86, 78,420.43 and 31,335.45

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Solution

The fourth proportional to 56,826.86, 78,420.43 and 31,335.45 is: 43,242.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,826.86 : 78,420.43 = 31,335.45 : x
  2. Step 2: Convert to fraction form
    56,826.86/78,420.43 = 31,335.45/x
  3. Step 3: Cross multiply
    56,826.86x = 78,420.43 × 31,335.45
  4. Step 4: Simplify right side
    56,826.86x = 2,457,339,340.76
  5. Step 5: Solve for x
    x = 2,457,339,340.76/56,826.86
  6. Step 6: Final answer
    x = 43,242.57

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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.