Home / 85,962.70-128,898.14-29,788.40

Finding the Fourth Proportional to 85,962.70, 128,898.14 and 29,788.40

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Solution

The fourth proportional to 85,962.70, 128,898.14 and 29,788.40 is: 44,666.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,962.70 : 128,898.14 = 29,788.40 : x
  2. Step 2: Convert to fraction form
    85,962.70/128,898.14 = 29,788.40/x
  3. Step 3: Cross multiply
    85,962.70x = 128,898.14 × 29,788.40
  4. Step 4: Simplify right side
    85,962.70x = 3,839,669,353.58
  5. Step 5: Solve for x
    x = 3,839,669,353.58/85,962.70
  6. Step 6: Final answer
    x = 44,666.69

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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.