Home / 72,319,674.77-99,801,884.27-39,280,243.13

Finding the Fourth Proportional to 72,319,674.77, 99,801,884.27 and 39,280,243.13

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Solution

The fourth proportional to 72,319,674.77, 99,801,884.27 and 39,280,243.13 is: 54,207,133.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,319,674.77 : 99,801,884.27 = 39,280,243.13 : x
  2. Step 2: Convert to fraction form
    72,319,674.77/99,801,884.27 = 39,280,243.13/x
  3. Step 3: Cross multiply
    72,319,674.77x = 99,801,884.27 × 39,280,243.13
  4. Step 4: Simplify right side
    72,319,674.77x = 3,920,242,278,761,321.50
  5. Step 5: Solve for x
    x = 3,920,242,278,761,321.50/72,319,674.77
  6. Step 6: Final answer
    x = 54,207,133.69

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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.