Home / 81,740.61-122,607.59-28,444.79

Finding the Fourth Proportional to 81,740.61, 122,607.59 and 28,444.79

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Solution

The fourth proportional to 81,740.61, 122,607.59 and 28,444.79 is: 42,666.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,740.61 : 122,607.59 = 28,444.79 : x
  2. Step 2: Convert to fraction form
    81,740.61/122,607.59 = 28,444.79/x
  3. Step 3: Cross multiply
    81,740.61x = 122,607.59 × 28,444.79
  4. Step 4: Simplify right side
    81,740.61x = 3,487,546,394.69
  5. Step 5: Solve for x
    x = 3,487,546,394.69/81,740.61
  6. Step 6: Final answer
    x = 42,666.02

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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.