Home / 81,319.71-112,222.73-45,513.66

Finding the Fourth Proportional to 81,319.71, 112,222.73 and 45,513.66

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Solution

The fourth proportional to 81,319.71, 112,222.73 and 45,513.66 is: 62,809.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,319.71 : 112,222.73 = 45,513.66 : x
  2. Step 2: Convert to fraction form
    81,319.71/112,222.73 = 45,513.66/x
  3. Step 3: Cross multiply
    81,319.71x = 112,222.73 × 45,513.66
  4. Step 4: Simplify right side
    81,319.71x = 5,107,666,949.92
  5. Step 5: Solve for x
    x = 5,107,666,949.92/81,319.71
  6. Step 6: Final answer
    x = 62,809.70

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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.