Home / 85,954.58-128,938.08-35,984.42

Finding the Fourth Proportional to 85,954.58, 128,938.08 and 35,984.42

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Solution

The fourth proportional to 85,954.58, 128,938.08 and 35,984.42 is: 53,979.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,954.58 : 128,938.08 = 35,984.42 : x
  2. Step 2: Convert to fraction form
    85,954.58/128,938.08 = 35,984.42/x
  3. Step 3: Cross multiply
    85,954.58x = 128,938.08 × 35,984.42
  4. Step 4: Simplify right side
    85,954.58x = 4,639,762,024.71
  5. Step 5: Solve for x
    x = 4,639,762,024.71/85,954.58
  6. Step 6: Final answer
    x = 53,979.23

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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.