Home / 77,964.90-116,918.30-28,031.36

Finding the Fourth Proportional to 77,964.90, 116,918.30 and 28,031.36

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Solution

The fourth proportional to 77,964.90, 116,918.30 and 28,031.36 is: 42,036.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,964.90 : 116,918.30 = 28,031.36 : x
  2. Step 2: Convert to fraction form
    77,964.90/116,918.30 = 28,031.36/x
  3. Step 3: Cross multiply
    77,964.90x = 116,918.30 × 28,031.36
  4. Step 4: Simplify right side
    77,964.90x = 3,277,378,957.89
  5. Step 5: Solve for x
    x = 3,277,378,957.89/77,964.90
  6. Step 6: Final answer
    x = 42,036.60

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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.