Home / 85,584.07-128,368.81-26,420.19

Finding the Fourth Proportional to 85,584.07, 128,368.81 and 26,420.19

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Solution

The fourth proportional to 85,584.07, 128,368.81 and 26,420.19 is: 39,628.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,584.07 : 128,368.81 = 26,420.19 : x
  2. Step 2: Convert to fraction form
    85,584.07/128,368.81 = 26,420.19/x
  3. Step 3: Cross multiply
    85,584.07x = 128,368.81 × 26,420.19
  4. Step 4: Simplify right side
    85,584.07x = 3,391,528,350.27
  5. Step 5: Solve for x
    x = 3,391,528,350.27/85,584.07
  6. Step 6: Final answer
    x = 39,628.03

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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.