Home / 85,512.40-128,282.64-26,348.08

Finding the Fourth Proportional to 85,512.40, 128,282.64 and 26,348.08

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Solution

The fourth proportional to 85,512.40, 128,282.64 and 26,348.08 is: 39,526.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,512.40 : 128,282.64 = 26,348.08 : x
  2. Step 2: Convert to fraction form
    85,512.40/128,282.64 = 26,348.08/x
  3. Step 3: Cross multiply
    85,512.40x = 128,282.64 × 26,348.08
  4. Step 4: Simplify right side
    85,512.40x = 3,380,001,261.33
  5. Step 5: Solve for x
    x = 3,380,001,261.33/85,512.40
  6. Step 6: Final answer
    x = 39,526.45

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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.