Home / 78,412,816.30-117,619,224.45-74,885,622.70

Finding the Fourth Proportional to 78,412,816.30, 117,619,224.45 and 74,885,622.70

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Solution

The fourth proportional to 78,412,816.30, 117,619,224.45 and 74,885,622.70 is: 112,328,434.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,412,816.30 : 117,619,224.45 = 74,885,622.70 : x
  2. Step 2: Convert to fraction form
    78,412,816.30/117,619,224.45 = 74,885,622.70/x
  3. Step 3: Cross multiply
    78,412,816.30x = 117,619,224.45 × 74,885,622.70
  4. Step 4: Simplify right side
    78,412,816.30x = 8,807,988,864,429,316
  5. Step 5: Solve for x
    x = 8,807,988,864,429,316/78,412,816.30
  6. Step 6: Final answer
    x = 112,328,434.05

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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.