Home / 77,985.17-116,985.95-25,398.75

Finding the Fourth Proportional to 77,985.17, 116,985.95 and 25,398.75

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Solution

The fourth proportional to 77,985.17, 116,985.95 and 25,398.75 is: 38,100.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,985.17 : 116,985.95 = 25,398.75 : x
  2. Step 2: Convert to fraction form
    77,985.17/116,985.95 = 25,398.75/x
  3. Step 3: Cross multiply
    77,985.17x = 116,985.95 × 25,398.75
  4. Step 4: Simplify right side
    77,985.17x = 2,971,296,897.56
  5. Step 5: Solve for x
    x = 2,971,296,897.56/77,985.17
  6. Step 6: Final answer
    x = 38,100.79

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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.