Home / 98,430.11-147,668.67-31,870.30

Finding the Fourth Proportional to 98,430.11, 147,668.67 and 31,870.30

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Solution

The fourth proportional to 98,430.11, 147,668.67 and 31,870.30 is: 47,813.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,430.11 : 147,668.67 = 31,870.30 : x
  2. Step 2: Convert to fraction form
    98,430.11/147,668.67 = 31,870.30/x
  3. Step 3: Cross multiply
    98,430.11x = 147,668.67 × 31,870.30
  4. Step 4: Simplify right side
    98,430.11x = 4,706,244,654.15
  5. Step 5: Solve for x
    x = 4,706,244,654.15/98,430.11
  6. Step 6: Final answer
    x = 47,813.06

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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.