Home / 87,428,588.63-120,539,301.66-71,689,624.43

Finding the Fourth Proportional to 87,428,588.63, 120,539,301.66 and 71,689,624.43

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Solution

The fourth proportional to 87,428,588.63, 120,539,301.66 and 71,689,624.43 is: 98,839,720.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,428,588.63 : 120,539,301.66 = 71,689,624.43 : x
  2. Step 2: Convert to fraction form
    87,428,588.63/120,539,301.66 = 71,689,624.43/x
  3. Step 3: Cross multiply
    87,428,588.63x = 120,539,301.66 × 71,689,624.43
  4. Step 4: Simplify right side
    87,428,588.63x = 8,641,417,264,457,178
  5. Step 5: Solve for x
    x = 8,641,417,264,457,178/87,428,588.63
  6. Step 6: Final answer
    x = 98,839,720.51

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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.