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Finding the Fourth Proportional to 65,308.50, 90,126.45 and 35,500.50

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Solution

The fourth proportional to 65,308.50, 90,126.45 and 35,500.50 is: 48,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,308.50 : 90,126.45 = 35,500.50 : x
  2. Step 2: Convert to fraction form
    65,308.50/90,126.45 = 35,500.50/x
  3. Step 3: Cross multiply
    65,308.50x = 90,126.45 × 35,500.50
  4. Step 4: Simplify right side
    65,308.50x = 3,199,534,038.23
  5. Step 5: Solve for x
    x = 3,199,534,038.23/65,308.50
  6. Step 6: Final answer
    x = 48,991.08

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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.