Home / 78,732,104.70-118,098,157.05-38,421,320.70

Finding the Fourth Proportional to 78,732,104.70, 118,098,157.05 and 38,421,320.70

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Solution

The fourth proportional to 78,732,104.70, 118,098,157.05 and 38,421,320.70 is: 57,631,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,104.70 : 118,098,157.05 = 38,421,320.70 : x
  2. Step 2: Convert to fraction form
    78,732,104.70/118,098,157.05 = 38,421,320.70/x
  3. Step 3: Cross multiply
    78,732,104.70x = 118,098,157.05 × 38,421,320.70
  4. Step 4: Simplify right side
    78,732,104.70x = 4,537,487,166,097,016
  5. Step 5: Solve for x
    x = 4,537,487,166,097,016/78,732,104.70
  6. Step 6: Final answer
    x = 57,631,981.05

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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.