Home / 77,380.95-116,104.23-42,279.60

Finding the Fourth Proportional to 77,380.95, 116,104.23 and 42,279.60

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Solution

The fourth proportional to 77,380.95, 116,104.23 and 42,279.60 is: 63,437.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,380.95 : 116,104.23 = 42,279.60 : x
  2. Step 2: Convert to fraction form
    77,380.95/116,104.23 = 42,279.60/x
  3. Step 3: Cross multiply
    77,380.95x = 116,104.23 × 42,279.60
  4. Step 4: Simplify right side
    77,380.95x = 4,908,839,953.90
  5. Step 5: Solve for x
    x = 4,908,839,953.90/77,380.95
  6. Step 6: Final answer
    x = 63,437.32

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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.