Home / 57,009.75-78,695.65-51,031.08

Finding the Fourth Proportional to 57,009.75, 78,695.65 and 51,031.08

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Solution

The fourth proportional to 57,009.75, 78,695.65 and 51,031.08 is: 70,442.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,009.75 : 78,695.65 = 51,031.08 : x
  2. Step 2: Convert to fraction form
    57,009.75/78,695.65 = 51,031.08/x
  3. Step 3: Cross multiply
    57,009.75x = 78,695.65 × 51,031.08
  4. Step 4: Simplify right side
    57,009.75x = 4,015,924,010.80
  5. Step 5: Solve for x
    x = 4,015,924,010.80/57,009.75
  6. Step 6: Final answer
    x = 70,442.76

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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.