Home / 78,718,624.20-118,112,039.10-42,284,505.60

Finding the Fourth Proportional to 78,718,624.20, 118,112,039.10 and 42,284,505.60

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Solution

The fourth proportional to 78,718,624.20, 118,112,039.10 and 42,284,505.60 is: 63,445,077.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,718,624.20 : 118,112,039.10 = 42,284,505.60 : x
  2. Step 2: Convert to fraction form
    78,718,624.20/118,112,039.10 = 42,284,505.60/x
  3. Step 3: Cross multiply
    78,718,624.20x = 118,112,039.10 × 42,284,505.60
  4. Step 4: Simplify right side
    78,718,624.20x = 4,994,309,178,751,369
  5. Step 5: Solve for x
    x = 4,994,309,178,751,369/78,718,624.20
  6. Step 6: Final answer
    x = 63,445,077.06

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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.