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Finding the Fourth Proportional to 60,480,491.80, 90,720,737.70 and 20,090,975.80

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Solution

The fourth proportional to 60,480,491.80, 90,720,737.70 and 20,090,975.80 is: 30,136,463.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,480,491.80 : 90,720,737.70 = 20,090,975.80 : x
  2. Step 2: Convert to fraction form
    60,480,491.80/90,720,737.70 = 20,090,975.80/x
  3. Step 3: Cross multiply
    60,480,491.80x = 90,720,737.70 × 20,090,975.80
  4. Step 4: Simplify right side
    60,480,491.80x = 1,822,668,145,688,847.75
  5. Step 5: Solve for x
    x = 1,822,668,145,688,847.75/60,480,491.80
  6. Step 6: Final answer
    x = 30,136,463.70

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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.