Home / 86,435.48-129,651.92-52,711.40

Finding the Fourth Proportional to 86,435.48, 129,651.92 and 52,711.40

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Solution

The fourth proportional to 86,435.48, 129,651.92 and 52,711.40 is: 79,066.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,435.48 : 129,651.92 = 52,711.40 : x
  2. Step 2: Convert to fraction form
    86,435.48/129,651.92 = 52,711.40/x
  3. Step 3: Cross multiply
    86,435.48x = 129,651.92 × 52,711.40
  4. Step 4: Simplify right side
    86,435.48x = 6,834,134,215.89
  5. Step 5: Solve for x
    x = 6,834,134,215.89/86,435.48
  6. Step 6: Final answer
    x = 79,066.31

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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.