Home / 42,125.84-58,142.76-28,729.08

Finding the Fourth Proportional to 42,125.84, 58,142.76 and 28,729.08

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Solution

The fourth proportional to 42,125.84, 58,142.76 and 28,729.08 is: 39,652.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,125.84 : 58,142.76 = 28,729.08 : x
  2. Step 2: Convert to fraction form
    42,125.84/58,142.76 = 28,729.08/x
  3. Step 3: Cross multiply
    42,125.84x = 58,142.76 × 28,729.08
  4. Step 4: Simplify right side
    42,125.84x = 1,670,388,003.46
  5. Step 5: Solve for x
    x = 1,670,388,003.46/42,125.84
  6. Step 6: Final answer
    x = 39,652.34

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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.