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Finding the Fourth Proportional to 46,991.40, 70,470.70 and 18,904.17

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Solution

The fourth proportional to 46,991.40, 70,470.70 and 18,904.17 is: 28,349.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,991.40 : 70,470.70 = 18,904.17 : x
  2. Step 2: Convert to fraction form
    46,991.40/70,470.70 = 18,904.17/x
  3. Step 3: Cross multiply
    46,991.40x = 70,470.70 × 18,904.17
  4. Step 4: Simplify right side
    46,991.40x = 1,332,190,092.82
  5. Step 5: Solve for x
    x = 1,332,190,092.82/46,991.40
  6. Step 6: Final answer
    x = 28,349.66

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1.5x scale

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.