Home / 78,698.09-118,070.15-25,389.03

Finding the Fourth Proportional to 78,698.09, 118,070.15 and 25,389.03

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Solution

The fourth proportional to 78,698.09, 118,070.15 and 25,389.03 is: 38,090.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,698.09 : 118,070.15 = 25,389.03 : x
  2. Step 2: Convert to fraction form
    78,698.09/118,070.15 = 25,389.03/x
  3. Step 3: Cross multiply
    78,698.09x = 118,070.15 × 25,389.03
  4. Step 4: Simplify right side
    78,698.09x = 2,997,686,453.51
  5. Step 5: Solve for x
    x = 2,997,686,453.51/78,698.09
  6. Step 6: Final answer
    x = 38,090.97

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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.