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Finding the Fourth Proportional to 90,678.66, 125,004.67 and 63,369.96

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Solution

The fourth proportional to 90,678.66, 125,004.67 and 63,369.96 is: 87,358.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,678.66 : 125,004.67 = 63,369.96 : x
  2. Step 2: Convert to fraction form
    90,678.66/125,004.67 = 63,369.96/x
  3. Step 3: Cross multiply
    90,678.66x = 125,004.67 × 63,369.96
  4. Step 4: Simplify right side
    90,678.66x = 7,921,540,937.71
  5. Step 5: Solve for x
    x = 7,921,540,937.71/90,678.66
  6. Step 6: Final answer
    x = 87,358.38

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1.5x scale

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.