Home / 90,913.40-136,403-46,561.04

Finding the Fourth Proportional to 90,913.40, 136,403 and 46,561.04

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Solution

The fourth proportional to 90,913.40, 136,403 and 46,561.04 is: 69,858.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,913.40 : 136,403 = 46,561.04 : x
  2. Step 2: Convert to fraction form
    90,913.40/136,403 = 46,561.04/x
  3. Step 3: Cross multiply
    90,913.40x = 136,403 × 46,561.04
  4. Step 4: Simplify right side
    90,913.40x = 6,351,065,539.12
  5. Step 5: Solve for x
    x = 6,351,065,539.12/90,913.40
  6. Step 6: Final answer
    x = 69,858.41

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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.