Home / 66,479.41-91,775.45-51,338.08

Finding the Fourth Proportional to 66,479.41, 91,775.45 and 51,338.08

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Solution

The fourth proportional to 66,479.41, 91,775.45 and 51,338.08 is: 70,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,479.41 : 91,775.45 = 51,338.08 : x
  2. Step 2: Convert to fraction form
    66,479.41/91,775.45 = 51,338.08/x
  3. Step 3: Cross multiply
    66,479.41x = 91,775.45 × 51,338.08
  4. Step 4: Simplify right side
    66,479.41x = 4,711,575,394.14
  5. Step 5: Solve for x
    x = 4,711,575,394.14/66,479.41
  6. Step 6: Final answer
    x = 70,872.70

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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.