Home / 78,428,400.80-117,626,854.80-37,487,760.80

Finding the Fourth Proportional to 78,428,400.80, 117,626,854.80 and 37,487,760.80

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Solution

The fourth proportional to 78,428,400.80, 117,626,854.80 and 37,487,760.80 is: 56,224,114.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,428,400.80 : 117,626,854.80 = 37,487,760.80 : x
  2. Step 2: Convert to fraction form
    78,428,400.80/117,626,854.80 = 37,487,760.80/x
  3. Step 3: Cross multiply
    78,428,400.80x = 117,626,854.80 × 37,487,760.80
  4. Step 4: Simplify right side
    78,428,400.80x = 4,409,567,396,398,731.50
  5. Step 5: Solve for x
    x = 4,409,567,396,398,731.50/78,428,400.80
  6. Step 6: Final answer
    x = 56,224,114.62

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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.