Home / 72,277,716.42-108,402,649.02-20,461,923.72

Finding the Fourth Proportional to 72,277,716.42, 108,402,649.02 and 20,461,923.72

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Solution

The fourth proportional to 72,277,716.42, 108,402,649.02 and 20,461,923.72 is: 30,688,943.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,277,716.42 : 108,402,649.02 = 20,461,923.72 : x
  2. Step 2: Convert to fraction form
    72,277,716.42/108,402,649.02 = 20,461,923.72/x
  3. Step 3: Cross multiply
    72,277,716.42x = 108,402,649.02 × 20,461,923.72
  4. Step 4: Simplify right side
    72,277,716.42x = 2,218,126,735,293,172.50
  5. Step 5: Solve for x
    x = 2,218,126,735,293,172.50/72,277,716.42
  6. Step 6: Final answer
    x = 30,688,943.22

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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.