Home / 90,862.56-136,315.70-38,287.08

Finding the Fourth Proportional to 90,862.56, 136,315.70 and 38,287.08

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Solution

The fourth proportional to 90,862.56, 136,315.70 and 38,287.08 is: 57,439.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,862.56 : 136,315.70 = 38,287.08 : x
  2. Step 2: Convert to fraction form
    90,862.56/136,315.70 = 38,287.08/x
  3. Step 3: Cross multiply
    90,862.56x = 136,315.70 × 38,287.08
  4. Step 4: Simplify right side
    90,862.56x = 5,219,130,111.16
  5. Step 5: Solve for x
    x = 5,219,130,111.16/90,862.56
  6. Step 6: Final answer
    x = 57,439.83

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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.