Home / 85,585.28-128,345.96-29,409.44

Finding the Fourth Proportional to 85,585.28, 128,345.96 and 29,409.44

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Solution

The fourth proportional to 85,585.28, 128,345.96 and 29,409.44 is: 44,103.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,585.28 : 128,345.96 = 29,409.44 : x
  2. Step 2: Convert to fraction form
    85,585.28/128,345.96 = 29,409.44/x
  3. Step 3: Cross multiply
    85,585.28x = 128,345.96 × 29,409.44
  4. Step 4: Simplify right side
    85,585.28x = 3,774,582,809.86
  5. Step 5: Solve for x
    x = 3,774,582,809.86/85,585.28
  6. Step 6: Final answer
    x = 44,103.18

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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.