Home / 78,624,280.80-117,936,421.20-64,753,670.70

Finding the Fourth Proportional to 78,624,280.80, 117,936,421.20 and 64,753,670.70

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Solution

The fourth proportional to 78,624,280.80, 117,936,421.20 and 64,753,670.70 is: 97,130,506.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,624,280.80 : 117,936,421.20 = 64,753,670.70 : x
  2. Step 2: Convert to fraction form
    78,624,280.80/117,936,421.20 = 64,753,670.70/x
  3. Step 3: Cross multiply
    78,624,280.80x = 117,936,421.20 × 64,753,670.70
  4. Step 4: Simplify right side
    78,624,280.80x = 7,636,816,181,921,299
  5. Step 5: Solve for x
    x = 7,636,816,181,921,299/78,624,280.80
  6. Step 6: Final answer
    x = 97,130,506.05

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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.