Home / 56,852.12-78,456.34-31,359.40

Finding the Fourth Proportional to 56,852.12, 78,456.34 and 31,359.40

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Solution

The fourth proportional to 56,852.12, 78,456.34 and 31,359.40 is: 43,276.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,852.12 : 78,456.34 = 31,359.40 : x
  2. Step 2: Convert to fraction form
    56,852.12/78,456.34 = 31,359.40/x
  3. Step 3: Cross multiply
    56,852.12x = 78,456.34 × 31,359.40
  4. Step 4: Simplify right side
    56,852.12x = 2,460,343,748.60
  5. Step 5: Solve for x
    x = 2,460,343,748.60/56,852.12
  6. Step 6: Final answer
    x = 43,276.20

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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.