Home / 56,122.10-77,448.54-30,971.60

Finding the Fourth Proportional to 56,122.10, 77,448.54 and 30,971.60

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Solution

The fourth proportional to 56,122.10, 77,448.54 and 30,971.60 is: 42,740.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,122.10 : 77,448.54 = 30,971.60 : x
  2. Step 2: Convert to fraction form
    56,122.10/77,448.54 = 30,971.60/x
  3. Step 3: Cross multiply
    56,122.10x = 77,448.54 × 30,971.60
  4. Step 4: Simplify right side
    56,122.10x = 2,398,704,659.36
  5. Step 5: Solve for x
    x = 2,398,704,659.36/56,122.10
  6. Step 6: Final answer
    x = 42,740.83

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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.