Home / 72,668,299.20-109,021,694.40-31,710,163.20

Finding the Fourth Proportional to 72,668,299.20, 109,021,694.40 and 31,710,163.20

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Solution

The fourth proportional to 72,668,299.20, 109,021,694.40 and 31,710,163.20 is: 47,573,642.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,668,299.20 : 109,021,694.40 = 31,710,163.20 : x
  2. Step 2: Convert to fraction form
    72,668,299.20/109,021,694.40 = 31,710,163.20/x
  3. Step 3: Cross multiply
    72,668,299.20x = 109,021,694.40 × 31,710,163.20
  4. Step 4: Simplify right side
    72,668,299.20x = 3,457,095,721,764,526
  5. Step 5: Solve for x
    x = 3,457,095,721,764,526/72,668,299.20
  6. Step 6: Final answer
    x = 47,573,642.98

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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.