Home / 78,054,080.96-107,711,003.03-42,771,676.52

Finding the Fourth Proportional to 78,054,080.96, 107,711,003.03 and 42,771,676.52

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Solution

The fourth proportional to 78,054,080.96, 107,711,003.03 and 42,771,676.52 is: 59,022,925.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,054,080.96 : 107,711,003.03 = 42,771,676.52 : x
  2. Step 2: Convert to fraction form
    78,054,080.96/107,711,003.03 = 42,771,676.52/x
  3. Step 3: Cross multiply
    78,054,080.96x = 107,711,003.03 × 42,771,676.52
  4. Step 4: Simplify right side
    78,054,080.96x = 4,606,980,178,491,487
  5. Step 5: Solve for x
    x = 4,606,980,178,491,487/78,054,080.96
  6. Step 6: Final answer
    x = 59,022,925.16

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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.