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Finding the Fourth Proportional to 65,245.50, 90,038.88 and 35,437.50

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Solution

The fourth proportional to 65,245.50, 90,038.88 and 35,437.50 is: 48,903.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,245.50 : 90,038.88 = 35,437.50 : x
  2. Step 2: Convert to fraction form
    65,245.50/90,038.88 = 35,437.50/x
  3. Step 3: Cross multiply
    65,245.50x = 90,038.88 × 35,437.50
  4. Step 4: Simplify right side
    65,245.50x = 3,190,752,810
  5. Step 5: Solve for x
    x = 3,190,752,810/65,245.50
  6. Step 6: Final answer
    x = 48,903.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.