Home / 84,306.86-126,457.36-21,127.54

Finding the Fourth Proportional to 84,306.86, 126,457.36 and 21,127.54

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Solution

The fourth proportional to 84,306.86, 126,457.36 and 21,127.54 is: 31,690.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,306.86 : 126,457.36 = 21,127.54 : x
  2. Step 2: Convert to fraction form
    84,306.86/126,457.36 = 21,127.54/x
  3. Step 3: Cross multiply
    84,306.86x = 126,457.36 × 21,127.54
  4. Step 4: Simplify right side
    84,306.86x = 2,671,732,931.69
  5. Step 5: Solve for x
    x = 2,671,732,931.69/84,306.86
  6. Step 6: Final answer
    x = 31,690.58

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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.