Home / 38,985,148.80-53,800,139.52-21,343,754.88

Finding the Fourth Proportional to 38,985,148.80, 53,800,139.52 and 21,343,754.88

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Solution

The fourth proportional to 38,985,148.80, 53,800,139.52 and 21,343,754.88 is: 29,454,728.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985,148.80 : 53,800,139.52 = 21,343,754.88 : x
  2. Step 2: Convert to fraction form
    38,985,148.80/53,800,139.52 = 21,343,754.88/x
  3. Step 3: Cross multiply
    38,985,148.80x = 53,800,139.52 × 21,343,754.88
  4. Step 4: Simplify right side
    38,985,148.80x = 1,148,296,990,424,680.75
  5. Step 5: Solve for x
    x = 1,148,296,990,424,680.75/38,985,148.80
  6. Step 6: Final answer
    x = 29,454,728.94

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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.