Home / 86,711.18-129,899.70-46,631.97

Finding the Fourth Proportional to 86,711.18, 129,899.70 and 46,631.97

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Solution

The fourth proportional to 86,711.18, 129,899.70 and 46,631.97 is: 69,858.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,711.18 : 129,899.70 = 46,631.97 : x
  2. Step 2: Convert to fraction form
    86,711.18/129,899.70 = 46,631.97/x
  3. Step 3: Cross multiply
    86,711.18x = 129,899.70 × 46,631.97
  4. Step 4: Simplify right side
    86,711.18x = 6,057,478,913.41
  5. Step 5: Solve for x
    x = 6,057,478,913.41/86,711.18
  6. Step 6: Final answer
    x = 69,858.11

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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.