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Finding the Fourth Proportional to 76,358.49, 105,369.70 and 42,366.89

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Solution

The fourth proportional to 76,358.49, 105,369.70 and 42,366.89 is: 58,463.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,358.49 : 105,369.70 = 42,366.89 : x
  2. Step 2: Convert to fraction form
    76,358.49/105,369.70 = 42,366.89/x
  3. Step 3: Cross multiply
    76,358.49x = 105,369.70 × 42,366.89
  4. Step 4: Simplify right side
    76,358.49x = 4,464,185,750.55
  5. Step 5: Solve for x
    x = 4,464,185,750.55/76,358.49
  6. Step 6: Final answer
    x = 58,463.52

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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.