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Finding the Fourth Proportional to 58,489.70, 80,620.98 and 45,720.32

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Solution

The fourth proportional to 58,489.70, 80,620.98 and 45,720.32 is: 63,019.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,489.70 : 80,620.98 = 45,720.32 : x
  2. Step 2: Convert to fraction form
    58,489.70/80,620.98 = 45,720.32/x
  3. Step 3: Cross multiply
    58,489.70x = 80,620.98 × 45,720.32
  4. Step 4: Simplify right side
    58,489.70x = 3,686,017,004.31
  5. Step 5: Solve for x
    x = 3,686,017,004.31/58,489.70
  6. Step 6: Final answer
    x = 63,019.93

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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.