Home / 65,788.71-90,782.91-38,926.54

Finding the Fourth Proportional to 65,788.71, 90,782.91 and 38,926.54

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Solution

The fourth proportional to 65,788.71, 90,782.91 and 38,926.54 is: 53,715.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,788.71 : 90,782.91 = 38,926.54 : x
  2. Step 2: Convert to fraction form
    65,788.71/90,782.91 = 38,926.54/x
  3. Step 3: Cross multiply
    65,788.71x = 90,782.91 × 38,926.54
  4. Step 4: Simplify right side
    65,788.71x = 3,533,864,123.52
  5. Step 5: Solve for x
    x = 3,533,864,123.52/65,788.71
  6. Step 6: Final answer
    x = 53,715.36

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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.