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Finding the Fourth Proportional to 60,189.60, 90,298.80 and 28,999.20

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Solution

The fourth proportional to 60,189.60, 90,298.80 and 28,999.20 is: 43,505.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,189.60 : 90,298.80 = 28,999.20 : x
  2. Step 2: Convert to fraction form
    60,189.60/90,298.80 = 28,999.20/x
  3. Step 3: Cross multiply
    60,189.60x = 90,298.80 × 28,999.20
  4. Step 4: Simplify right side
    60,189.60x = 2,618,592,960.96
  5. Step 5: Solve for x
    x = 2,618,592,960.96/60,189.60
  6. Step 6: Final answer
    x = 43,505.74

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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.