Home / 85,739.34-128,609.02-35,792.18

Finding the Fourth Proportional to 85,739.34, 128,609.02 and 35,792.18

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Solution

The fourth proportional to 85,739.34, 128,609.02 and 35,792.18 is: 53,688.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,739.34 : 128,609.02 = 35,792.18 : x
  2. Step 2: Convert to fraction form
    85,739.34/128,609.02 = 35,792.18/x
  3. Step 3: Cross multiply
    85,739.34x = 128,609.02 × 35,792.18
  4. Step 4: Simplify right side
    85,739.34x = 4,603,197,193.46
  5. Step 5: Solve for x
    x = 4,603,197,193.46/85,739.34
  6. Step 6: Final answer
    x = 53,688.27

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Similar ratio
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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.