Home / 78,656,273.80-117,984,410.70-65,219,345.80

Finding the Fourth Proportional to 78,656,273.80, 117,984,410.70 and 65,219,345.80

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Solution

The fourth proportional to 78,656,273.80, 117,984,410.70 and 65,219,345.80 is: 97,829,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,656,273.80 : 117,984,410.70 = 65,219,345.80 : x
  2. Step 2: Convert to fraction form
    78,656,273.80/117,984,410.70 = 65,219,345.80/x
  3. Step 3: Cross multiply
    78,656,273.80x = 117,984,410.70 × 65,219,345.80
  4. Step 4: Simplify right side
    78,656,273.80x = 7,694,866,080,452,520
  5. Step 5: Solve for x
    x = 7,694,866,080,452,520/78,656,273.80
  6. Step 6: Final answer
    x = 97,829,018.70

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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.