Home / 81,242.55-112,117.75-45,432.47

Finding the Fourth Proportional to 81,242.55, 112,117.75 and 45,432.47

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Solution

The fourth proportional to 81,242.55, 112,117.75 and 45,432.47 is: 62,698.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,242.55 : 112,117.75 = 45,432.47 : x
  2. Step 2: Convert to fraction form
    81,242.55/112,117.75 = 45,432.47/x
  3. Step 3: Cross multiply
    81,242.55x = 112,117.75 × 45,432.47
  4. Step 4: Simplify right side
    81,242.55x = 5,093,786,480.06
  5. Step 5: Solve for x
    x = 5,093,786,480.06/81,242.55
  6. Step 6: Final answer
    x = 62,698.51

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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.