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Finding the Fourth Proportional to 70,447.40, 105,495.80 and 49,288.45

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Solution

The fourth proportional to 70,447.40, 105,495.80 and 49,288.45 is: 73,810.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,447.40 : 105,495.80 = 49,288.45 : x
  2. Step 2: Convert to fraction form
    70,447.40/105,495.80 = 49,288.45/x
  3. Step 3: Cross multiply
    70,447.40x = 105,495.80 × 49,288.45
  4. Step 4: Simplify right side
    70,447.40x = 5,199,724,463.51
  5. Step 5: Solve for x
    x = 5,199,724,463.51/70,447.40
  6. Step 6: Final answer
    x = 73,810.03

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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.