Home / 81,273.90-112,152.68-45,457.70

Finding the Fourth Proportional to 81,273.90, 112,152.68 and 45,457.70

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Solution

The fourth proportional to 81,273.90, 112,152.68 and 45,457.70 is: 62,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,273.90 : 112,152.68 = 45,457.70 : x
  2. Step 2: Convert to fraction form
    81,273.90/112,152.68 = 45,457.70/x
  3. Step 3: Cross multiply
    81,273.90x = 112,152.68 × 45,457.70
  4. Step 4: Simplify right side
    81,273.90x = 5,098,202,881.64
  5. Step 5: Solve for x
    x = 5,098,202,881.64/81,273.90
  6. Step 6: Final answer
    x = 62,728.66

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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.