Home / 78,955,237.60-118,432,856.40-25,107,992.80

Finding the Fourth Proportional to 78,955,237.60, 118,432,856.40 and 25,107,992.80

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Solution

The fourth proportional to 78,955,237.60, 118,432,856.40 and 25,107,992.80 is: 37,661,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,955,237.60 : 118,432,856.40 = 25,107,992.80 : x
  2. Step 2: Convert to fraction form
    78,955,237.60/118,432,856.40 = 25,107,992.80/x
  3. Step 3: Cross multiply
    78,955,237.60x = 118,432,856.40 × 25,107,992.80
  4. Step 4: Simplify right side
    78,955,237.60x = 2,973,611,305,774,634
  5. Step 5: Solve for x
    x = 2,973,611,305,774,634/78,955,237.60
  6. Step 6: Final answer
    x = 37,661,989.20

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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.