Home / 81,457.20-112,412.40-45,647.04

Finding the Fourth Proportional to 81,457.20, 112,412.40 and 45,647.04

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Solution

The fourth proportional to 81,457.20, 112,412.40 and 45,647.04 is: 62,993.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,457.20 : 112,412.40 = 45,647.04 : x
  2. Step 2: Convert to fraction form
    81,457.20/112,412.40 = 45,647.04/x
  3. Step 3: Cross multiply
    81,457.20x = 112,412.40 × 45,647.04
  4. Step 4: Simplify right side
    81,457.20x = 5,131,293,319.30
  5. Step 5: Solve for x
    x = 5,131,293,319.30/81,457.20
  6. Step 6: Final answer
    x = 62,993.74

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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.