Home / 78,157,068.64-107,786,188.56-48,791,108.32

Finding the Fourth Proportional to 78,157,068.64, 107,786,188.56 and 48,791,108.32

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Solution

The fourth proportional to 78,157,068.64, 107,786,188.56 and 48,791,108.32 is: 67,287,677.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,157,068.64 : 107,786,188.56 = 48,791,108.32 : x
  2. Step 2: Convert to fraction form
    78,157,068.64/107,786,188.56 = 48,791,108.32/x
  3. Step 3: Cross multiply
    78,157,068.64x = 107,786,188.56 × 48,791,108.32
  4. Step 4: Simplify right side
    78,157,068.64x = 5,259,007,601,430,905
  5. Step 5: Solve for x
    x = 5,259,007,601,430,905/78,157,068.64
  6. Step 6: Final answer
    x = 67,287,677.15

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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.