Home / 78,144,005.20-117,216,007.80-57,736,670.80

Finding the Fourth Proportional to 78,144,005.20, 117,216,007.80 and 57,736,670.80

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Solution

The fourth proportional to 78,144,005.20, 117,216,007.80 and 57,736,670.80 is: 86,605,006.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,144,005.20 : 117,216,007.80 = 57,736,670.80 : x
  2. Step 2: Convert to fraction form
    78,144,005.20/117,216,007.80 = 57,736,670.80/x
  3. Step 3: Cross multiply
    78,144,005.20x = 117,216,007.80 × 57,736,670.80
  4. Step 4: Simplify right side
    78,144,005.20x = 6,767,662,054,838,832
  5. Step 5: Solve for x
    x = 6,767,662,054,838,832/78,144,005.20
  6. Step 6: Final answer
    x = 86,605,006.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.