Home / 65,111.20-97,666.80-28,247.20

Finding the Fourth Proportional to 65,111.20, 97,666.80 and 28,247.20

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Solution

The fourth proportional to 65,111.20, 97,666.80 and 28,247.20 is: 42,370.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,111.20 : 97,666.80 = 28,247.20 : x
  2. Step 2: Convert to fraction form
    65,111.20/97,666.80 = 28,247.20/x
  3. Step 3: Cross multiply
    65,111.20x = 97,666.80 × 28,247.20
  4. Step 4: Simplify right side
    65,111.20x = 2,758,813,632.96
  5. Step 5: Solve for x
    x = 2,758,813,632.96/65,111.20
  6. Step 6: Final answer
    x = 42,370.80

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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.