Home / 65,129.12-97,621.92-42,612.76

Finding the Fourth Proportional to 65,129.12, 97,621.92 and 42,612.76

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Solution

The fourth proportional to 65,129.12, 97,621.92 and 42,612.76 is: 63,872.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,129.12 : 97,621.92 = 42,612.76 : x
  2. Step 2: Convert to fraction form
    65,129.12/97,621.92 = 42,612.76/x
  3. Step 3: Cross multiply
    65,129.12x = 97,621.92 × 42,612.76
  4. Step 4: Simplify right side
    65,129.12x = 4,159,939,447.70
  5. Step 5: Solve for x
    x = 4,159,939,447.70/65,129.12
  6. Step 6: Final answer
    x = 63,872.19

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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.