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Finding the Fourth Proportional to 65,749.60, 98,624.40 and 19,007.20

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Solution

The fourth proportional to 65,749.60, 98,624.40 and 19,007.20 is: 28,510.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,749.60 : 98,624.40 = 19,007.20 : x
  2. Step 2: Convert to fraction form
    65,749.60/98,624.40 = 19,007.20/x
  3. Step 3: Cross multiply
    65,749.60x = 98,624.40 × 19,007.20
  4. Step 4: Simplify right side
    65,749.60x = 1,874,573,695.68
  5. Step 5: Solve for x
    x = 1,874,573,695.68/65,749.60
  6. Step 6: Final answer
    x = 28,510.80

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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.