Home / 77,987.18-116,988.96-25,400.76

Finding the Fourth Proportional to 77,987.18, 116,988.96 and 25,400.76

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Solution

The fourth proportional to 77,987.18, 116,988.96 and 25,400.76 is: 38,103.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,987.18 : 116,988.96 = 25,400.76 : x
  2. Step 2: Convert to fraction form
    77,987.18/116,988.96 = 25,400.76/x
  3. Step 3: Cross multiply
    77,987.18x = 116,988.96 × 25,400.76
  4. Step 4: Simplify right side
    77,987.18x = 2,971,608,495.61
  5. Step 5: Solve for x
    x = 2,971,608,495.61/77,987.18
  6. Step 6: Final answer
    x = 38,103.81

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1.5x scale

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.