Home / 92,841.12-128,123.37-54,603.45

Finding the Fourth Proportional to 92,841.12, 128,123.37 and 54,603.45

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Solution

The fourth proportional to 92,841.12, 128,123.37 and 54,603.45 is: 75,354.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,841.12 : 128,123.37 = 54,603.45 : x
  2. Step 2: Convert to fraction form
    92,841.12/128,123.37 = 54,603.45/x
  3. Step 3: Cross multiply
    92,841.12x = 128,123.37 × 54,603.45
  4. Step 4: Simplify right side
    92,841.12x = 6,995,978,027.63
  5. Step 5: Solve for x
    x = 6,995,978,027.63/92,841.12
  6. Step 6: Final answer
    x = 75,354.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.