Home / 52,857.78-72,945.90-28,985.34

Finding the Fourth Proportional to 52,857.78, 72,945.90 and 28,985.34

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Solution

The fourth proportional to 52,857.78, 72,945.90 and 28,985.34 is: 40,000.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,857.78 : 72,945.90 = 28,985.34 : x
  2. Step 2: Convert to fraction form
    52,857.78/72,945.90 = 28,985.34/x
  3. Step 3: Cross multiply
    52,857.78x = 72,945.90 × 28,985.34
  4. Step 4: Simplify right side
    52,857.78x = 2,114,361,713.11
  5. Step 5: Solve for x
    x = 2,114,361,713.11/52,857.78
  6. Step 6: Final answer
    x = 40,000.96

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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.