Home / 84,779.40-127,169.15-40,271.21

Finding the Fourth Proportional to 84,779.40, 127,169.15 and 40,271.21

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Solution

The fourth proportional to 84,779.40, 127,169.15 and 40,271.21 is: 60,406.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,779.40 : 127,169.15 = 40,271.21 : x
  2. Step 2: Convert to fraction form
    84,779.40/127,169.15 = 40,271.21/x
  3. Step 3: Cross multiply
    84,779.40x = 127,169.15 × 40,271.21
  4. Step 4: Simplify right side
    84,779.40x = 5,121,256,004.51
  5. Step 5: Solve for x
    x = 5,121,256,004.51/84,779.40
  6. Step 6: Final answer
    x = 60,406.85

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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.