Home / 47,065.31-70,582.29-18,978.11

Finding the Fourth Proportional to 47,065.31, 70,582.29 and 18,978.11

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Solution

The fourth proportional to 47,065.31, 70,582.29 and 18,978.11 is: 28,460.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,065.31 : 70,582.29 = 18,978.11 : x
  2. Step 2: Convert to fraction form
    47,065.31/70,582.29 = 18,978.11/x
  3. Step 3: Cross multiply
    47,065.31x = 70,582.29 × 18,978.11
  4. Step 4: Simplify right side
    47,065.31x = 1,339,518,110.76
  5. Step 5: Solve for x
    x = 1,339,518,110.76/47,065.31
  6. Step 6: Final answer
    x = 28,460.84

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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.