Home / 91,071.66-125,604.63-76,479.60

Finding the Fourth Proportional to 91,071.66, 125,604.63 and 76,479.60

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Solution

The fourth proportional to 91,071.66, 125,604.63 and 76,479.60 is: 105,479.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,071.66 : 125,604.63 = 76,479.60 : x
  2. Step 2: Convert to fraction form
    91,071.66/125,604.63 = 76,479.60/x
  3. Step 3: Cross multiply
    91,071.66x = 125,604.63 × 76,479.60
  4. Step 4: Simplify right side
    91,071.66x = 9,606,191,860.55
  5. Step 5: Solve for x
    x = 9,606,191,860.55/91,071.66
  6. Step 6: Final answer
    x = 105,479.49

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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.