Home / 90,001.40-135,031.28-30,837.60

Finding the Fourth Proportional to 90,001.40, 135,031.28 and 30,837.60

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Solution

The fourth proportional to 90,001.40, 135,031.28 and 30,837.60 is: 46,266.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,001.40 : 135,031.28 = 30,837.60 : x
  2. Step 2: Convert to fraction form
    90,001.40/135,031.28 = 30,837.60/x
  3. Step 3: Cross multiply
    90,001.40x = 135,031.28 × 30,837.60
  4. Step 4: Simplify right side
    90,001.40x = 4,164,040,600.13
  5. Step 5: Solve for x
    x = 4,164,040,600.13/90,001.40
  6. Step 6: Final answer
    x = 46,266.40

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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.