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Finding the Fourth Proportional to 84,790.99, 127,205.52 and 28,629.10

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Solution

The fourth proportional to 84,790.99, 127,205.52 and 28,629.10 is: 42,950.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,790.99 : 127,205.52 = 28,629.10 : x
  2. Step 2: Convert to fraction form
    84,790.99/127,205.52 = 28,629.10/x
  3. Step 3: Cross multiply
    84,790.99x = 127,205.52 × 28,629.10
  4. Step 4: Simplify right side
    84,790.99x = 3,641,779,552.63
  5. Step 5: Solve for x
    x = 3,641,779,552.63/84,790.99
  6. Step 6: Final answer
    x = 42,950.08

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1.5x scale

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.