Home / 85,735.42-128,609.30-29,574.70

Finding the Fourth Proportional to 85,735.42, 128,609.30 and 29,574.70

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Solution

The fourth proportional to 85,735.42, 128,609.30 and 29,574.70 is: 44,364.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,735.42 : 128,609.30 = 29,574.70 : x
  2. Step 2: Convert to fraction form
    85,735.42/128,609.30 = 29,574.70/x
  3. Step 3: Cross multiply
    85,735.42x = 128,609.30 × 29,574.70
  4. Step 4: Simplify right side
    85,735.42x = 3,803,581,464.71
  5. Step 5: Solve for x
    x = 3,803,581,464.71/85,735.42
  6. Step 6: Final answer
    x = 44,364.18

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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.