Home / 76,137.36-105,069.80-42,603.28

Finding the Fourth Proportional to 76,137.36, 105,069.80 and 42,603.28

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Solution

The fourth proportional to 76,137.36, 105,069.80 and 42,603.28 is: 58,792.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,137.36 : 105,069.80 = 42,603.28 : x
  2. Step 2: Convert to fraction form
    76,137.36/105,069.80 = 42,603.28/x
  3. Step 3: Cross multiply
    76,137.36x = 105,069.80 × 42,603.28
  4. Step 4: Simplify right side
    76,137.36x = 4,476,318,108.94
  5. Step 5: Solve for x
    x = 4,476,318,108.94/76,137.36
  6. Step 6: Final answer
    x = 58,792.66

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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.