Home / 78,990.06-118,505.84-28,394.22

Finding the Fourth Proportional to 78,990.06, 118,505.84 and 28,394.22

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Solution

The fourth proportional to 78,990.06, 118,505.84 and 28,394.22 is: 42,598.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,990.06 : 118,505.84 = 28,394.22 : x
  2. Step 2: Convert to fraction form
    78,990.06/118,505.84 = 28,394.22/x
  3. Step 3: Cross multiply
    78,990.06x = 118,505.84 × 28,394.22
  4. Step 4: Simplify right side
    78,990.06x = 3,364,880,892.24
  5. Step 5: Solve for x
    x = 3,364,880,892.24/78,990.06
  6. Step 6: Final answer
    x = 42,598.79

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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.