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Finding the Fourth Proportional to 53,898,950.80, 80,851,925.40 and 28,389,782.80

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Solution

The fourth proportional to 53,898,950.80, 80,851,925.40 and 28,389,782.80 is: 42,586,517.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,898,950.80 : 80,851,925.40 = 28,389,782.80 : x
  2. Step 2: Convert to fraction form
    53,898,950.80/80,851,925.40 = 28,389,782.80/x
  3. Step 3: Cross multiply
    53,898,950.80x = 80,851,925.40 × 28,389,782.80
  4. Step 4: Simplify right side
    53,898,950.80x = 2,295,368,601,067,803.50
  5. Step 5: Solve for x
    x = 2,295,368,601,067,803.50/53,898,950.80
  6. Step 6: Final answer
    x = 42,586,517.31

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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.