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Finding the Fourth Proportional to 77,980.77, 116,986.95 and 25,376.13

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Solution

The fourth proportional to 77,980.77, 116,986.95 and 25,376.13 is: 38,069.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,980.77 : 116,986.95 = 25,376.13 : x
  2. Step 2: Convert to fraction form
    77,980.77/116,986.95 = 25,376.13/x
  3. Step 3: Cross multiply
    77,980.77x = 116,986.95 × 25,376.13
  4. Step 4: Simplify right side
    77,980.77x = 2,968,676,051.50
  5. Step 5: Solve for x
    x = 2,968,676,051.50/77,980.77
  6. Step 6: Final answer
    x = 38,069.33

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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.