Home / 81,330.88-112,211.04-45,515.20

Finding the Fourth Proportional to 81,330.88, 112,211.04 and 45,515.20

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Solution

The fourth proportional to 81,330.88, 112,211.04 and 45,515.20 is: 62,796.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,330.88 : 112,211.04 = 45,515.20 : x
  2. Step 2: Convert to fraction form
    81,330.88/112,211.04 = 45,515.20/x
  3. Step 3: Cross multiply
    81,330.88x = 112,211.04 × 45,515.20
  4. Step 4: Simplify right side
    81,330.88x = 5,107,307,927.81
  5. Step 5: Solve for x
    x = 5,107,307,927.81/81,330.88
  6. Step 6: Final answer
    x = 62,796.66

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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.