Home / 65,328.30-90,159.75-38,479.26

Finding the Fourth Proportional to 65,328.30, 90,159.75 and 38,479.26

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Solution

The fourth proportional to 65,328.30, 90,159.75 and 38,479.26 is: 53,105.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,328.30 : 90,159.75 = 38,479.26 : x
  2. Step 2: Convert to fraction form
    65,328.30/90,159.75 = 38,479.26/x
  3. Step 3: Cross multiply
    65,328.30x = 90,159.75 × 38,479.26
  4. Step 4: Simplify right side
    65,328.30x = 3,469,280,461.79
  5. Step 5: Solve for x
    x = 3,469,280,461.79/65,328.30
  6. Step 6: Final answer
    x = 53,105.32

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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.