Home / 77,293.35-106,664.59-42,840.28

Finding the Fourth Proportional to 77,293.35, 106,664.59 and 42,840.28

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Solution

The fourth proportional to 77,293.35, 106,664.59 and 42,840.28 is: 59,119.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,293.35 : 106,664.59 = 42,840.28 : x
  2. Step 2: Convert to fraction form
    77,293.35/106,664.59 = 42,840.28/x
  3. Step 3: Cross multiply
    77,293.35x = 106,664.59 × 42,840.28
  4. Step 4: Simplify right side
    77,293.35x = 4,569,541,088.57
  5. Step 5: Solve for x
    x = 4,569,541,088.57/77,293.35
  6. Step 6: Final answer
    x = 59,119.46

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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.