Home / 56,171.10-77,516.73-30,678.21

Finding the Fourth Proportional to 56,171.10, 77,516.73 and 30,678.21

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Solution

The fourth proportional to 56,171.10, 77,516.73 and 30,678.21 is: 42,336.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,171.10 : 77,516.73 = 30,678.21 : x
  2. Step 2: Convert to fraction form
    56,171.10/77,516.73 = 30,678.21/x
  3. Step 3: Cross multiply
    56,171.10x = 77,516.73 × 30,678.21
  4. Step 4: Simplify right side
    56,171.10x = 2,378,074,521.45
  5. Step 5: Solve for x
    x = 2,378,074,521.45/56,171.10
  6. Step 6: Final answer
    x = 42,336.26

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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.