Home / 78,420.48-108,208.08-46,588.56

Finding the Fourth Proportional to 78,420.48, 108,208.08 and 46,588.56

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Solution

The fourth proportional to 78,420.48, 108,208.08 and 46,588.56 is: 64,284.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,420.48 : 108,208.08 = 46,588.56 : x
  2. Step 2: Convert to fraction form
    78,420.48/108,208.08 = 46,588.56/x
  3. Step 3: Cross multiply
    78,420.48x = 108,208.08 × 46,588.56
  4. Step 4: Simplify right side
    78,420.48x = 5,041,258,627.56
  5. Step 5: Solve for x
    x = 5,041,258,627.56/78,420.48
  6. Step 6: Final answer
    x = 64,284.98

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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.