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Finding the Fourth Proportional to 42,470.51, 63,347.43 and 36,879.89

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Solution

The fourth proportional to 42,470.51, 63,347.43 and 36,879.89 is: 55,008.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,470.51 : 63,347.43 = 36,879.89 : x
  2. Step 2: Convert to fraction form
    42,470.51/63,347.43 = 36,879.89/x
  3. Step 3: Cross multiply
    42,470.51x = 63,347.43 × 36,879.89
  4. Step 4: Simplify right side
    42,470.51x = 2,336,246,065.78
  5. Step 5: Solve for x
    x = 2,336,246,065.78/42,470.51
  6. Step 6: Final answer
    x = 55,008.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.