Home / 91,999.18-126,981.22-56,219.32

Finding the Fourth Proportional to 91,999.18, 126,981.22 and 56,219.32

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Solution

The fourth proportional to 91,999.18, 126,981.22 and 56,219.32 is: 77,596.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,999.18 : 126,981.22 = 56,219.32 : x
  2. Step 2: Convert to fraction form
    91,999.18/126,981.22 = 56,219.32/x
  3. Step 3: Cross multiply
    91,999.18x = 126,981.22 × 56,219.32
  4. Step 4: Simplify right side
    91,999.18x = 7,138,797,841.17
  5. Step 5: Solve for x
    x = 7,138,797,841.17/91,999.18
  6. Step 6: Final answer
    x = 77,596.32

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1.5x scale

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.