Home / 81,317.68-112,214.76-45,020.50

Finding the Fourth Proportional to 81,317.68, 112,214.76 and 45,020.50

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Solution

The fourth proportional to 81,317.68, 112,214.76 and 45,020.50 is: 62,126.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,317.68 : 112,214.76 = 45,020.50 : x
  2. Step 2: Convert to fraction form
    81,317.68/112,214.76 = 45,020.50/x
  3. Step 3: Cross multiply
    81,317.68x = 112,214.76 × 45,020.50
  4. Step 4: Simplify right side
    81,317.68x = 5,051,964,602.58
  5. Step 5: Solve for x
    x = 5,051,964,602.58/81,317.68
  6. Step 6: Final answer
    x = 62,126.28

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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.