Home / 90,935.34-136,421.91-38,345.28

Finding the Fourth Proportional to 90,935.34, 136,421.91 and 38,345.28

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Solution

The fourth proportional to 90,935.34, 136,421.91 and 38,345.28 is: 57,525.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,935.34 : 136,421.91 = 38,345.28 : x
  2. Step 2: Convert to fraction form
    90,935.34/136,421.91 = 38,345.28/x
  3. Step 3: Cross multiply
    90,935.34x = 136,421.91 × 38,345.28
  4. Step 4: Simplify right side
    90,935.34x = 5,231,136,337.08
  5. Step 5: Solve for x
    x = 5,231,136,337.08/90,935.34
  6. Step 6: Final answer
    x = 57,525.89

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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.