Home / 85,443.04-128,091.58-60,404.32

Finding the Fourth Proportional to 85,443.04, 128,091.58 and 60,404.32

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Solution

The fourth proportional to 85,443.04, 128,091.58 and 60,404.32 is: 90,554.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,443.04 : 128,091.58 = 60,404.32 : x
  2. Step 2: Convert to fraction form
    85,443.04/128,091.58 = 60,404.32/x
  3. Step 3: Cross multiply
    85,443.04x = 128,091.58 × 60,404.32
  4. Step 4: Simplify right side
    85,443.04x = 7,737,284,787.63
  5. Step 5: Solve for x
    x = 7,737,284,787.63/85,443.04
  6. Step 6: Final answer
    x = 90,554.89

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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.