Home / 85,587.36-128,393.34-26,427.60

Finding the Fourth Proportional to 85,587.36, 128,393.34 and 26,427.60

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Solution

The fourth proportional to 85,587.36, 128,393.34 and 26,427.60 is: 39,645.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,587.36 : 128,393.34 = 26,427.60 : x
  2. Step 2: Convert to fraction form
    85,587.36/128,393.34 = 26,427.60/x
  3. Step 3: Cross multiply
    85,587.36x = 128,393.34 × 26,427.60
  4. Step 4: Simplify right side
    85,587.36x = 3,393,127,832.18
  5. Step 5: Solve for x
    x = 3,393,127,832.18/85,587.36
  6. Step 6: Final answer
    x = 39,645.20

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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.