Home / 78,977.02-118,465.71-39,494.38

Finding the Fourth Proportional to 78,977.02, 118,465.71 and 39,494.38

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Solution

The fourth proportional to 78,977.02, 118,465.71 and 39,494.38 is: 59,241.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,977.02 : 118,465.71 = 39,494.38 : x
  2. Step 2: Convert to fraction form
    78,977.02/118,465.71 = 39,494.38/x
  3. Step 3: Cross multiply
    78,977.02x = 118,465.71 × 39,494.38
  4. Step 4: Simplify right side
    78,977.02x = 4,678,729,767.71
  5. Step 5: Solve for x
    x = 4,678,729,767.71/78,977.02
  6. Step 6: Final answer
    x = 59,241.66

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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.