Home / 72,011,849.01-99,375,988.47-38,972,106.68

Finding the Fourth Proportional to 72,011,849.01, 99,375,988.47 and 38,972,106.68

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Solution

The fourth proportional to 72,011,849.01, 99,375,988.47 and 38,972,106.68 is: 53,781,310.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,011,849.01 : 99,375,988.47 = 38,972,106.68 : x
  2. Step 2: Convert to fraction form
    72,011,849.01/99,375,988.47 = 38,972,106.68/x
  3. Step 3: Cross multiply
    72,011,849.01x = 99,375,988.47 × 38,972,106.68
  4. Step 4: Simplify right side
    72,011,849.01x = 3,872,891,623,586,409.50
  5. Step 5: Solve for x
    x = 3,872,891,623,586,409.50/72,011,849.01
  6. Step 6: Final answer
    x = 53,781,310.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.