Home / 85,542,003.60-128,313,005.40-28,020,404.40

Finding the Fourth Proportional to 85,542,003.60, 128,313,005.40 and 28,020,404.40

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Solution

The fourth proportional to 85,542,003.60, 128,313,005.40 and 28,020,404.40 is: 42,030,606.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,542,003.60 : 128,313,005.40 = 28,020,404.40 : x
  2. Step 2: Convert to fraction form
    85,542,003.60/128,313,005.40 = 28,020,404.40/x
  3. Step 3: Cross multiply
    85,542,003.60x = 128,313,005.40 × 28,020,404.40
  4. Step 4: Simplify right side
    85,542,003.60x = 3,595,382,301,087,383.50
  5. Step 5: Solve for x
    x = 3,595,382,301,087,383.50/85,542,003.60
  6. Step 6: Final answer
    x = 42,030,606.60

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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.