Home / 78,127,415.73-107,805,924.54-42,835,934.01

Finding the Fourth Proportional to 78,127,415.73, 107,805,924.54 and 42,835,934.01

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Solution

The fourth proportional to 78,127,415.73, 107,805,924.54 and 42,835,934.01 is: 59,108,155.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,127,415.73 : 107,805,924.54 = 42,835,934.01 : x
  2. Step 2: Convert to fraction form
    78,127,415.73/107,805,924.54 = 42,835,934.01/x
  3. Step 3: Cross multiply
    78,127,415.73x = 107,805,924.54 × 42,835,934.01
  4. Step 4: Simplify right side
    78,127,415.73x = 4,617,967,469,482,480
  5. Step 5: Solve for x
    x = 4,617,967,469,482,480/78,127,415.73
  6. Step 6: Final answer
    x = 59,108,155.91

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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.