Home / 81,232.10-112,099.53-45,421.70

Finding the Fourth Proportional to 81,232.10, 112,099.53 and 45,421.70

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Solution

The fourth proportional to 81,232.10, 112,099.53 and 45,421.70 is: 62,681.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,232.10 : 112,099.53 = 45,421.70 : x
  2. Step 2: Convert to fraction form
    81,232.10/112,099.53 = 45,421.70/x
  3. Step 3: Cross multiply
    81,232.10x = 112,099.53 × 45,421.70
  4. Step 4: Simplify right side
    81,232.10x = 5,091,751,221.80
  5. Step 5: Solve for x
    x = 5,091,751,221.80/81,232.10
  6. Step 6: Final answer
    x = 62,681.52

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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.