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Finding the Fourth Proportional to 65,430.20, 90,285.90 and 36,751.34

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Solution

The fourth proportional to 65,430.20, 90,285.90 and 36,751.34 is: 50,712.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,430.20 : 90,285.90 = 36,751.34 : x
  2. Step 2: Convert to fraction form
    65,430.20/90,285.90 = 36,751.34/x
  3. Step 3: Cross multiply
    65,430.20x = 90,285.90 × 36,751.34
  4. Step 4: Simplify right side
    65,430.20x = 3,318,127,808.11
  5. Step 5: Solve for x
    x = 3,318,127,808.11/65,430.20
  6. Step 6: Final answer
    x = 50,712.48

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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.