Home / 64,140.90-96,211.35-19,763.70

Finding the Fourth Proportional to 64,140.90, 96,211.35 and 19,763.70

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Solution

The fourth proportional to 64,140.90, 96,211.35 and 19,763.70 is: 29,645.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,140.90 : 96,211.35 = 19,763.70 : x
  2. Step 2: Convert to fraction form
    64,140.90/96,211.35 = 19,763.70/x
  3. Step 3: Cross multiply
    64,140.90x = 96,211.35 × 19,763.70
  4. Step 4: Simplify right side
    64,140.90x = 1,901,492,258.00
  5. Step 5: Solve for x
    x = 1,901,492,258.00/64,140.90
  6. Step 6: Final answer
    x = 29,645.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.