Home / 78,288,133.60-117,432,200.40-56,677,074.40

Finding the Fourth Proportional to 78,288,133.60, 117,432,200.40 and 56,677,074.40

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Solution

The fourth proportional to 78,288,133.60, 117,432,200.40 and 56,677,074.40 is: 85,015,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,288,133.60 : 117,432,200.40 = 56,677,074.40 : x
  2. Step 2: Convert to fraction form
    78,288,133.60/117,432,200.40 = 56,677,074.40/x
  3. Step 3: Cross multiply
    78,288,133.60x = 117,432,200.40 × 56,677,074.40
  4. Step 4: Simplify right side
    78,288,133.60x = 6,655,713,559,026,510
  5. Step 5: Solve for x
    x = 6,655,713,559,026,510/78,288,133.60
  6. Step 6: Final answer
    x = 85,015,611.60

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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.