Home / 47,065.12-64,927.06-31,162.90

Finding the Fourth Proportional to 47,065.12, 64,927.06 and 31,162.90

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Solution

The fourth proportional to 47,065.12, 64,927.06 and 31,162.90 is: 42,989.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,065.12 : 64,927.06 = 31,162.90 : x
  2. Step 2: Convert to fraction form
    47,065.12/64,927.06 = 31,162.90/x
  3. Step 3: Cross multiply
    47,065.12x = 64,927.06 × 31,162.90
  4. Step 4: Simplify right side
    47,065.12x = 2,023,315,478.07
  5. Step 5: Solve for x
    x = 2,023,315,478.07/47,065.12
  6. Step 6: Final answer
    x = 42,989.70

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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.