Home / 76,513.76-105,586.85-42,521.36

Finding the Fourth Proportional to 76,513.76, 105,586.85 and 42,521.36

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Solution

The fourth proportional to 76,513.76, 105,586.85 and 42,521.36 is: 58,678.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,513.76 : 105,586.85 = 42,521.36 : x
  2. Step 2: Convert to fraction form
    76,513.76/105,586.85 = 42,521.36/x
  3. Step 3: Cross multiply
    76,513.76x = 105,586.85 × 42,521.36
  4. Step 4: Simplify right side
    76,513.76x = 4,489,696,247.51
  5. Step 5: Solve for x
    x = 4,489,696,247.51/76,513.76
  6. Step 6: Final answer
    x = 58,678.29

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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.