Home / 77,301,208.40-115,965,809.40-38,865,995.60

Finding the Fourth Proportional to 77,301,208.40, 115,965,809.40 and 38,865,995.60

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Solution

The fourth proportional to 77,301,208.40, 115,965,809.40 and 38,865,995.60 is: 58,306,030.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,301,208.40 : 115,965,809.40 = 38,865,995.60 : x
  2. Step 2: Convert to fraction form
    77,301,208.40/115,965,809.40 = 38,865,995.60/x
  3. Step 3: Cross multiply
    77,301,208.40x = 115,965,809.40 × 38,865,995.60
  4. Step 4: Simplify right side
    77,301,208.40x = 4,507,126,637,890,839
  5. Step 5: Solve for x
    x = 4,507,126,637,890,839/77,301,208.40
  6. Step 6: Final answer
    x = 58,306,030.80

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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.