Home / 66,421.29-99,613.70-39,746.30

Finding the Fourth Proportional to 66,421.29, 99,613.70 and 39,746.30

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Solution

The fourth proportional to 66,421.29, 99,613.70 and 39,746.30 is: 59,608.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,421.29 : 99,613.70 = 39,746.30 : x
  2. Step 2: Convert to fraction form
    66,421.29/99,613.70 = 39,746.30/x
  3. Step 3: Cross multiply
    66,421.29x = 99,613.70 × 39,746.30
  4. Step 4: Simplify right side
    66,421.29x = 3,959,275,307.51
  5. Step 5: Solve for x
    x = 3,959,275,307.51/66,421.29
  6. Step 6: Final answer
    x = 59,608.53

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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.