Home / 98,239.42-147,387.88-31,678.21

Finding the Fourth Proportional to 98,239.42, 147,387.88 and 31,678.21

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Solution

The fourth proportional to 98,239.42, 147,387.88 and 31,678.21 is: 47,526.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,239.42 : 147,387.88 = 31,678.21 : x
  2. Step 2: Convert to fraction form
    98,239.42/147,387.88 = 31,678.21/x
  3. Step 3: Cross multiply
    98,239.42x = 147,387.88 × 31,678.21
  4. Step 4: Simplify right side
    98,239.42x = 4,668,983,477.16
  5. Step 5: Solve for x
    x = 4,668,983,477.16/98,239.42
  6. Step 6: Final answer
    x = 47,526.58

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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.