Home / 78,881,140.80-118,321,711.20-36,413,812.80

Finding the Fourth Proportional to 78,881,140.80, 118,321,711.20 and 36,413,812.80

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Solution

The fourth proportional to 78,881,140.80, 118,321,711.20 and 36,413,812.80 is: 54,620,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,881,140.80 : 118,321,711.20 = 36,413,812.80 : x
  2. Step 2: Convert to fraction form
    78,881,140.80/118,321,711.20 = 36,413,812.80/x
  3. Step 3: Cross multiply
    78,881,140.80x = 118,321,711.20 × 36,413,812.80
  4. Step 4: Simplify right side
    78,881,140.80x = 4,308,544,641,812,463
  5. Step 5: Solve for x
    x = 4,308,544,641,812,463/78,881,140.80
  6. Step 6: Final answer
    x = 54,620,719.20

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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.