Home / 76,420.45-105,466.89-42,435.55

Finding the Fourth Proportional to 76,420.45, 105,466.89 and 42,435.55

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Solution

The fourth proportional to 76,420.45, 105,466.89 and 42,435.55 is: 58,564.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,420.45 : 105,466.89 = 42,435.55 : x
  2. Step 2: Convert to fraction form
    76,420.45/105,466.89 = 42,435.55/x
  3. Step 3: Cross multiply
    76,420.45x = 105,466.89 × 42,435.55
  4. Step 4: Simplify right side
    76,420.45x = 4,475,545,483.94
  5. Step 5: Solve for x
    x = 4,475,545,483.94/76,420.45
  6. Step 6: Final answer
    x = 58,564.76

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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.