Home / 81,283.48-121,767.47-59,897.39

Finding the Fourth Proportional to 81,283.48, 121,767.47 and 59,897.39

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Solution

The fourth proportional to 81,283.48, 121,767.47 and 59,897.39 is: 89,729.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,283.48 : 121,767.47 = 59,897.39 : x
  2. Step 2: Convert to fraction form
    81,283.48/121,767.47 = 59,897.39/x
  3. Step 3: Cross multiply
    81,283.48x = 121,767.47 × 59,897.39
  4. Step 4: Simplify right side
    81,283.48x = 7,293,552,731.58
  5. Step 5: Solve for x
    x = 7,293,552,731.58/81,283.48
  6. Step 6: Final answer
    x = 89,729.83

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1.5x scale

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.