Home / 78,287,549.60-117,431,324.40-56,676,490.40

Finding the Fourth Proportional to 78,287,549.60, 117,431,324.40 and 56,676,490.40

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Solution

The fourth proportional to 78,287,549.60, 117,431,324.40 and 56,676,490.40 is: 85,014,735.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,287,549.60 : 117,431,324.40 = 56,676,490.40 : x
  2. Step 2: Convert to fraction form
    78,287,549.60/117,431,324.40 = 56,676,490.40/x
  3. Step 3: Cross multiply
    78,287,549.60x = 117,431,324.40 × 56,676,490.40
  4. Step 4: Simplify right side
    78,287,549.60x = 6,655,595,330,015,886
  5. Step 5: Solve for x
    x = 6,655,595,330,015,886/78,287,549.60
  6. Step 6: Final answer
    x = 85,014,735.60

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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.