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Finding the Fourth Proportional to 77,984.92, 116,985.58 and 25,398.50

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Solution

The fourth proportional to 77,984.92, 116,985.58 and 25,398.50 is: 38,100.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,984.92 : 116,985.58 = 25,398.50 : x
  2. Step 2: Convert to fraction form
    77,984.92/116,985.58 = 25,398.50/x
  3. Step 3: Cross multiply
    77,984.92x = 116,985.58 × 25,398.50
  4. Step 4: Simplify right side
    77,984.92x = 2,971,258,482.60
  5. Step 5: Solve for x
    x = 2,971,258,482.60/77,984.92
  6. Step 6: Final answer
    x = 38,100.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.