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Finding the Fourth Proportional to 79,053, 118,570.72 and 19,888.64

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Solution

The fourth proportional to 79,053, 118,570.72 and 19,888.64 is: 29,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,053 : 118,570.72 = 19,888.64 : x
  2. Step 2: Convert to fraction form
    79,053/118,570.72 = 19,888.64/x
  3. Step 3: Cross multiply
    79,053x = 118,570.72 × 19,888.64
  4. Step 4: Simplify right side
    79,053x = 2,358,210,364.62
  5. Step 5: Solve for x
    x = 2,358,210,364.62/79,053
  6. Step 6: Final answer
    x = 29,830.75

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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.