Home / 75,686.75-113,547.98-42,429.77

Finding the Fourth Proportional to 75,686.75, 113,547.98 and 42,429.77

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Solution

The fourth proportional to 75,686.75, 113,547.98 and 42,429.77 is: 63,654.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,686.75 : 113,547.98 = 42,429.77 : x
  2. Step 2: Convert to fraction form
    75,686.75/113,547.98 = 42,429.77/x
  3. Step 3: Cross multiply
    75,686.75x = 113,547.98 × 42,429.77
  4. Step 4: Simplify right side
    75,686.75x = 4,817,815,039.54
  5. Step 5: Solve for x
    x = 4,817,815,039.54/75,686.75
  6. Step 6: Final answer
    x = 63,654.67

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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.