Home / 90,212.16-124,434.72-61,933.44

Finding the Fourth Proportional to 90,212.16, 124,434.72 and 61,933.44

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Solution

The fourth proportional to 90,212.16, 124,434.72 and 61,933.44 is: 85,428.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,212.16 : 124,434.72 = 61,933.44 : x
  2. Step 2: Convert to fraction form
    90,212.16/124,434.72 = 61,933.44/x
  3. Step 3: Cross multiply
    90,212.16x = 124,434.72 × 61,933.44
  4. Step 4: Simplify right side
    90,212.16x = 7,706,670,265.04
  5. Step 5: Solve for x
    x = 7,706,670,265.04/90,212.16
  6. Step 6: Final answer
    x = 85,428.29

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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.