Home / 66,117.86-99,157.95-18,729.82

Finding the Fourth Proportional to 66,117.86, 99,157.95 and 18,729.82

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Solution

The fourth proportional to 66,117.86, 99,157.95 and 18,729.82 is: 28,089.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,117.86 : 99,157.95 = 18,729.82 : x
  2. Step 2: Convert to fraction form
    66,117.86/99,157.95 = 18,729.82/x
  3. Step 3: Cross multiply
    66,117.86x = 99,157.95 × 18,729.82
  4. Step 4: Simplify right side
    66,117.86x = 1,857,210,555.07
  5. Step 5: Solve for x
    x = 1,857,210,555.07/66,117.86
  6. Step 6: Final answer
    x = 28,089.39

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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.