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Finding the Fourth Proportional to 30,572.93, 45,859.70 and 8,386.32

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Solution

The fourth proportional to 30,572.93, 45,859.70 and 8,386.32 is: 12,579.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,572.93 : 45,859.70 = 8,386.32 : x
  2. Step 2: Convert to fraction form
    30,572.93/45,859.70 = 8,386.32/x
  3. Step 3: Cross multiply
    30,572.93x = 45,859.70 × 8,386.32
  4. Step 4: Simplify right side
    30,572.93x = 384,594,077.37
  5. Step 5: Solve for x
    x = 384,594,077.37/30,572.93
  6. Step 6: Final answer
    x = 12,579.56

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1.5x scale

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.