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Finding the Fourth Proportional to 65,526.60, 98,289.90 and 28,080.30

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Solution

The fourth proportional to 65,526.60, 98,289.90 and 28,080.30 is: 42,120.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,526.60 : 98,289.90 = 28,080.30 : x
  2. Step 2: Convert to fraction form
    65,526.60/98,289.90 = 28,080.30/x
  3. Step 3: Cross multiply
    65,526.60x = 98,289.90 × 28,080.30
  4. Step 4: Simplify right side
    65,526.60x = 2,760,009,878.97
  5. Step 5: Solve for x
    x = 2,760,009,878.97/65,526.60
  6. Step 6: Final answer
    x = 42,120.45

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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.