Home / 85,938.17-128,914.79-35,340.30

Finding the Fourth Proportional to 85,938.17, 128,914.79 and 35,340.30

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Solution

The fourth proportional to 85,938.17, 128,914.79 and 35,340.30 is: 53,013.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,938.17 : 128,914.79 = 35,340.30 : x
  2. Step 2: Convert to fraction form
    85,938.17/128,914.79 = 35,340.30/x
  3. Step 3: Cross multiply
    85,938.17x = 128,914.79 × 35,340.30
  4. Step 4: Simplify right side
    85,938.17x = 4,555,887,176.34
  5. Step 5: Solve for x
    x = 4,555,887,176.34/85,938.17
  6. Step 6: Final answer
    x = 53,013.55

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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.