Home / 56,852.21-78,457.31-31,359.35

Finding the Fourth Proportional to 56,852.21, 78,457.31 and 31,359.35

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Solution

The fourth proportional to 56,852.21, 78,457.31 and 31,359.35 is: 43,276.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,852.21 : 78,457.31 = 31,359.35 : x
  2. Step 2: Convert to fraction form
    56,852.21/78,457.31 = 31,359.35/x
  3. Step 3: Cross multiply
    56,852.21x = 78,457.31 × 31,359.35
  4. Step 4: Simplify right side
    56,852.21x = 2,460,370,401.29
  5. Step 5: Solve for x
    x = 2,460,370,401.29/56,852.21
  6. Step 6: Final answer
    x = 43,276.60

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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.