Home / 77,987.28-116,954.76-25,384.40

Finding the Fourth Proportional to 77,987.28, 116,954.76 and 25,384.40

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Solution

The fourth proportional to 77,987.28, 116,954.76 and 25,384.40 is: 38,068.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,987.28 : 116,954.76 = 25,384.40 : x
  2. Step 2: Convert to fraction form
    77,987.28/116,954.76 = 25,384.40/x
  3. Step 3: Cross multiply
    77,987.28x = 116,954.76 × 25,384.40
  4. Step 4: Simplify right side
    77,987.28x = 2,968,826,409.74
  5. Step 5: Solve for x
    x = 2,968,826,409.74/77,987.28
  6. Step 6: Final answer
    x = 38,068.09

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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.