Home / 90,389.58-124,709.10-52,143.98

Finding the Fourth Proportional to 90,389.58, 124,709.10 and 52,143.98

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Solution

The fourth proportional to 90,389.58, 124,709.10 and 52,143.98 is: 71,942.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,389.58 : 124,709.10 = 52,143.98 : x
  2. Step 2: Convert to fraction form
    90,389.58/124,709.10 = 52,143.98/x
  3. Step 3: Cross multiply
    90,389.58x = 124,709.10 × 52,143.98
  4. Step 4: Simplify right side
    90,389.58x = 6,502,828,816.22
  5. Step 5: Solve for x
    x = 6,502,828,816.22/90,389.58
  6. Step 6: Final answer
    x = 71,942.24

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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.