Home / 74,969.02-112,420.50-28,189

Finding the Fourth Proportional to 74,969.02, 112,420.50 and 28,189

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Solution

The fourth proportional to 74,969.02, 112,420.50 and 28,189 is: 42,271.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,969.02 : 112,420.50 = 28,189 : x
  2. Step 2: Convert to fraction form
    74,969.02/112,420.50 = 28,189/x
  3. Step 3: Cross multiply
    74,969.02x = 112,420.50 × 28,189
  4. Step 4: Simplify right side
    74,969.02x = 3,169,021,474.50
  5. Step 5: Solve for x
    x = 3,169,021,474.50/74,969.02
  6. Step 6: Final answer
    x = 42,271.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.