Home / 70,117,489.76-105,143,131.76-40,979,687.81

Finding the Fourth Proportional to 70,117,489.76, 105,143,131.76 and 40,979,687.81

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Solution

The fourth proportional to 70,117,489.76, 105,143,131.76 and 40,979,687.81 is: 61,450,184.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,117,489.76 : 105,143,131.76 = 40,979,687.81 : x
  2. Step 2: Convert to fraction form
    70,117,489.76/105,143,131.76 = 40,979,687.81/x
  3. Step 3: Cross multiply
    70,117,489.76x = 105,143,131.76 × 40,979,687.81
  4. Step 4: Simplify right side
    70,117,489.76x = 4,308,732,714,159,881.50
  5. Step 5: Solve for x
    x = 4,308,732,714,159,881.50/70,117,489.76
  6. Step 6: Final answer
    x = 61,450,184.96

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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.