Home / 78,782.16-108,720.32-46,969.36

Finding the Fourth Proportional to 78,782.16, 108,720.32 and 46,969.36

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Solution

The fourth proportional to 78,782.16, 108,720.32 and 46,969.36 is: 64,818.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,782.16 : 108,720.32 = 46,969.36 : x
  2. Step 2: Convert to fraction form
    78,782.16/108,720.32 = 46,969.36/x
  3. Step 3: Cross multiply
    78,782.16x = 108,720.32 × 46,969.36
  4. Step 4: Simplify right side
    78,782.16x = 5,106,523,849.40
  5. Step 5: Solve for x
    x = 5,106,523,849.40/78,782.16
  6. Step 6: Final answer
    x = 64,818.28

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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.