Home / 53,357.13-79,981.02-20,053.98

Finding the Fourth Proportional to 53,357.13, 79,981.02 and 20,053.98

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Solution

The fourth proportional to 53,357.13, 79,981.02 and 20,053.98 is: 30,060.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,357.13 : 79,981.02 = 20,053.98 : x
  2. Step 2: Convert to fraction form
    53,357.13/79,981.02 = 20,053.98/x
  3. Step 3: Cross multiply
    53,357.13x = 79,981.02 × 20,053.98
  4. Step 4: Simplify right side
    53,357.13x = 1,603,937,775.46
  5. Step 5: Solve for x
    x = 1,603,937,775.46/53,357.13
  6. Step 6: Final answer
    x = 30,060.42

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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.