Home / 90,156.36-124,517.90-61,426.20

Finding the Fourth Proportional to 90,156.36, 124,517.90 and 61,426.20

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Solution

The fourth proportional to 90,156.36, 124,517.90 and 61,426.20 is: 84,837.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,156.36 : 124,517.90 = 61,426.20 : x
  2. Step 2: Convert to fraction form
    90,156.36/124,517.90 = 61,426.20/x
  3. Step 3: Cross multiply
    90,156.36x = 124,517.90 × 61,426.20
  4. Step 4: Simplify right side
    90,156.36x = 7,648,661,428.98
  5. Step 5: Solve for x
    x = 7,648,661,428.98/90,156.36
  6. Step 6: Final answer
    x = 84,837.74

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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.