Home / 69,881.20-96,457.82-39,686.63

Finding the Fourth Proportional to 69,881.20, 96,457.82 and 39,686.63

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Solution

The fourth proportional to 69,881.20, 96,457.82 and 39,686.63 is: 54,779.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,881.20 : 96,457.82 = 39,686.63 : x
  2. Step 2: Convert to fraction form
    69,881.20/96,457.82 = 39,686.63/x
  3. Step 3: Cross multiply
    69,881.20x = 96,457.82 × 39,686.63
  4. Step 4: Simplify right side
    69,881.20x = 3,828,085,132.22
  5. Step 5: Solve for x
    x = 3,828,085,132.22/69,881.20
  6. Step 6: Final answer
    x = 54,779.90

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1.5x scale

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.