Home / 76,376.98-105,396.51-42,385.06

Finding the Fourth Proportional to 76,376.98, 105,396.51 and 42,385.06

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Solution

The fourth proportional to 76,376.98, 105,396.51 and 42,385.06 is: 58,489.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,376.98 : 105,396.51 = 42,385.06 : x
  2. Step 2: Convert to fraction form
    76,376.98/105,396.51 = 42,385.06/x
  3. Step 3: Cross multiply
    76,376.98x = 105,396.51 × 42,385.06
  4. Step 4: Simplify right side
    76,376.98x = 4,467,237,400.14
  5. Step 5: Solve for x
    x = 4,467,237,400.14/76,376.98
  6. Step 6: Final answer
    x = 58,489.32

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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.