Home / 78,431,442.96-108,233,218.12-42,666,697.94

Finding the Fourth Proportional to 78,431,442.96, 108,233,218.12 and 42,666,697.94

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Solution

The fourth proportional to 78,431,442.96, 108,233,218.12 and 42,666,697.94 is: 58,878,860.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,431,442.96 : 108,233,218.12 = 42,666,697.94 : x
  2. Step 2: Convert to fraction form
    78,431,442.96/108,233,218.12 = 42,666,697.94/x
  3. Step 3: Cross multiply
    78,431,442.96x = 108,233,218.12 × 42,666,697.94
  4. Step 4: Simplify right side
    78,431,442.96x = 4,617,954,024,600,175
  5. Step 5: Solve for x
    x = 4,617,954,024,600,175/78,431,442.96
  6. Step 6: Final answer
    x = 58,878,860.96

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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.