Home / 81,322.13-112,225.10-45,515.45

Finding the Fourth Proportional to 81,322.13, 112,225.10 and 45,515.45

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Solution

The fourth proportional to 81,322.13, 112,225.10 and 45,515.45 is: 62,811.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,322.13 : 112,225.10 = 45,515.45 : x
  2. Step 2: Convert to fraction form
    81,322.13/112,225.10 = 45,515.45/x
  3. Step 3: Cross multiply
    81,322.13x = 112,225.10 × 45,515.45
  4. Step 4: Simplify right side
    81,322.13x = 5,107,975,139.09
  5. Step 5: Solve for x
    x = 5,107,975,139.09/81,322.13
  6. Step 6: Final answer
    x = 62,811.63

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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.