Home / 38,688,400.67-53,393,760.90-28,881,816.12

Finding the Fourth Proportional to 38,688,400.67, 53,393,760.90 and 28,881,816.12

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Solution

The fourth proportional to 38,688,400.67, 53,393,760.90 and 28,881,816.12 is: 39,859,719.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,688,400.67 : 53,393,760.90 = 28,881,816.12 : x
  2. Step 2: Convert to fraction form
    38,688,400.67/53,393,760.90 = 28,881,816.12/x
  3. Step 3: Cross multiply
    38,688,400.67x = 53,393,760.90 × 28,881,816.12
  4. Step 4: Simplify right side
    38,688,400.67x = 1,542,108,784,269,045.75
  5. Step 5: Solve for x
    x = 1,542,108,784,269,045.75/38,688,400.67
  6. Step 6: Final answer
    x = 39,859,719.13

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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.