Home / 78,783.16-108,721.70-46,970.36

Finding the Fourth Proportional to 78,783.16, 108,721.70 and 46,970.36

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Solution

The fourth proportional to 78,783.16, 108,721.70 and 46,970.36 is: 64,819.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,783.16 : 108,721.70 = 46,970.36 : x
  2. Step 2: Convert to fraction form
    78,783.16/108,721.70 = 46,970.36/x
  3. Step 3: Cross multiply
    78,783.16x = 108,721.70 × 46,970.36
  4. Step 4: Simplify right side
    78,783.16x = 5,106,697,388.81
  5. Step 5: Solve for x
    x = 5,106,697,388.81/78,783.16
  6. Step 6: Final answer
    x = 64,819.66

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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.