Home / 78,618,742.64-117,899,913-30,110,234.48

Finding the Fourth Proportional to 78,618,742.64, 117,899,913 and 30,110,234.48

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Solution

The fourth proportional to 78,618,742.64, 117,899,913 and 30,110,234.48 is: 45,154,551.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,618,742.64 : 117,899,913 = 30,110,234.48 : x
  2. Step 2: Convert to fraction form
    78,618,742.64/117,899,913 = 30,110,234.48/x
  3. Step 3: Cross multiply
    78,618,742.64x = 117,899,913 × 30,110,234.48
  4. Step 4: Simplify right side
    78,618,742.64x = 3,549,994,025,601,600.50
  5. Step 5: Solve for x
    x = 3,549,994,025,601,600.50/78,618,742.64
  6. Step 6: Final answer
    x = 45,154,551.02

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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.