Home / 85,828.65-128,761.53-35,227.80

Finding the Fourth Proportional to 85,828.65, 128,761.53 and 35,227.80

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Solution

The fourth proportional to 85,828.65, 128,761.53 and 35,227.80 is: 52,849.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,828.65 : 128,761.53 = 35,227.80 : x
  2. Step 2: Convert to fraction form
    85,828.65/128,761.53 = 35,227.80/x
  3. Step 3: Cross multiply
    85,828.65x = 128,761.53 × 35,227.80
  4. Step 4: Simplify right side
    85,828.65x = 4,535,985,426.53
  5. Step 5: Solve for x
    x = 4,535,985,426.53/85,828.65
  6. Step 6: Final answer
    x = 52,849.32

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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.