Home / 90,009.40-124,064.82-63,824.20

Finding the Fourth Proportional to 90,009.40, 124,064.82 and 63,824.20

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Solution

The fourth proportional to 90,009.40, 124,064.82 and 63,824.20 is: 87,972.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,009.40 : 124,064.82 = 63,824.20 : x
  2. Step 2: Convert to fraction form
    90,009.40/124,064.82 = 63,824.20/x
  3. Step 3: Cross multiply
    90,009.40x = 124,064.82 × 63,824.20
  4. Step 4: Simplify right side
    90,009.40x = 7,918,337,884.64
  5. Step 5: Solve for x
    x = 7,918,337,884.64/90,009.40
  6. Step 6: Final answer
    x = 87,972.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.