Home / 90,069.28-135,127.40-52,661.32

Finding the Fourth Proportional to 90,069.28, 135,127.40 and 52,661.32

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Solution

The fourth proportional to 90,069.28, 135,127.40 and 52,661.32 is: 79,005.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,069.28 : 135,127.40 = 52,661.32 : x
  2. Step 2: Convert to fraction form
    90,069.28/135,127.40 = 52,661.32/x
  3. Step 3: Cross multiply
    90,069.28x = 135,127.40 × 52,661.32
  4. Step 4: Simplify right side
    90,069.28x = 7,115,987,252.17
  5. Step 5: Solve for x
    x = 7,115,987,252.17/90,069.28
  6. Step 6: Final answer
    x = 79,005.71

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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.