Home / 78,487,541.31-108,311,749.05-43,680,222.53

Finding the Fourth Proportional to 78,487,541.31, 108,311,749.05 and 43,680,222.53

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Solution

The fourth proportional to 78,487,541.31, 108,311,749.05 and 43,680,222.53 is: 60,278,118.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,487,541.31 : 108,311,749.05 = 43,680,222.53 : x
  2. Step 2: Convert to fraction form
    78,487,541.31/108,311,749.05 = 43,680,222.53/x
  3. Step 3: Cross multiply
    78,487,541.31x = 108,311,749.05 × 43,680,222.53
  4. Step 4: Simplify right side
    78,487,541.31x = 4,731,081,301,117,516
  5. Step 5: Solve for x
    x = 4,731,081,301,117,516/78,487,541.31
  6. Step 6: Final answer
    x = 60,278,118.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.