Home / 76,505.05-105,574.85-42,512.66

Finding the Fourth Proportional to 76,505.05, 105,574.85 and 42,512.66

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Solution

The fourth proportional to 76,505.05, 105,574.85 and 42,512.66 is: 58,666.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,505.05 : 105,574.85 = 42,512.66 : x
  2. Step 2: Convert to fraction form
    76,505.05/105,574.85 = 42,512.66/x
  3. Step 3: Cross multiply
    76,505.05x = 105,574.85 × 42,512.66
  4. Step 4: Simplify right side
    76,505.05x = 4,488,267,702.60
  5. Step 5: Solve for x
    x = 4,488,267,702.60/76,505.05
  6. Step 6: Final answer
    x = 58,666.29

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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.