Home / 90,634.80-135,952.20-57,392.40

Finding the Fourth Proportional to 90,634.80, 135,952.20 and 57,392.40

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Solution

The fourth proportional to 90,634.80, 135,952.20 and 57,392.40 is: 86,088.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,634.80 : 135,952.20 = 57,392.40 : x
  2. Step 2: Convert to fraction form
    90,634.80/135,952.20 = 57,392.40/x
  3. Step 3: Cross multiply
    90,634.80x = 135,952.20 × 57,392.40
  4. Step 4: Simplify right side
    90,634.80x = 7,802,623,043.28
  5. Step 5: Solve for x
    x = 7,802,623,043.28/90,634.80
  6. Step 6: Final answer
    x = 86,088.60

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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.