Home / 78,412,304.80-117,618,457.20-74,885,111.20

Finding the Fourth Proportional to 78,412,304.80, 117,618,457.20 and 74,885,111.20

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Solution

The fourth proportional to 78,412,304.80, 117,618,457.20 and 74,885,111.20 is: 112,327,666.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,412,304.80 : 117,618,457.20 = 74,885,111.20 : x
  2. Step 2: Convert to fraction form
    78,412,304.80/117,618,457.20 = 74,885,111.20/x
  3. Step 3: Cross multiply
    78,412,304.80x = 117,618,457.20 × 74,885,111.20
  4. Step 4: Simplify right side
    78,412,304.80x = 8,807,871,246,594,441
  5. Step 5: Solve for x
    x = 8,807,871,246,594,441/78,412,304.80
  6. Step 6: Final answer
    x = 112,327,666.80

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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.