Home / 85,509.76-128,281.44-26,335.36

Finding the Fourth Proportional to 85,509.76, 128,281.44 and 26,335.36

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Solution

The fourth proportional to 85,509.76, 128,281.44 and 26,335.36 is: 39,508.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,509.76 : 128,281.44 = 26,335.36 : x
  2. Step 2: Convert to fraction form
    85,509.76/128,281.44 = 26,335.36/x
  3. Step 3: Cross multiply
    85,509.76x = 128,281.44 × 26,335.36
  4. Step 4: Simplify right side
    85,509.76x = 3,378,337,903.72
  5. Step 5: Solve for x
    x = 3,378,337,903.72/85,509.76
  6. Step 6: Final answer
    x = 39,508.21

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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.