Home / 78,740.69-108,659.02-46,485.70

Finding the Fourth Proportional to 78,740.69, 108,659.02 and 46,485.70

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Solution

The fourth proportional to 78,740.69, 108,659.02 and 46,485.70 is: 64,148.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,740.69 : 108,659.02 = 46,485.70 : x
  2. Step 2: Convert to fraction form
    78,740.69/108,659.02 = 46,485.70/x
  3. Step 3: Cross multiply
    78,740.69x = 108,659.02 × 46,485.70
  4. Step 4: Simplify right side
    78,740.69x = 5,051,090,101.58
  5. Step 5: Solve for x
    x = 5,051,090,101.58/78,740.69
  6. Step 6: Final answer
    x = 64,148.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.