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Finding the Fourth Proportional to 65,779.48, 98,671.02 and 19,034.20

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Solution

The fourth proportional to 65,779.48, 98,671.02 and 19,034.20 is: 28,551.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,779.48 : 98,671.02 = 19,034.20 : x
  2. Step 2: Convert to fraction form
    65,779.48/98,671.02 = 19,034.20/x
  3. Step 3: Cross multiply
    65,779.48x = 98,671.02 × 19,034.20
  4. Step 4: Simplify right side
    65,779.48x = 1,878,123,928.88
  5. Step 5: Solve for x
    x = 1,878,123,928.88/65,779.48
  6. Step 6: Final answer
    x = 28,551.82

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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.