Home / 78,821.84-118,130.08-32,020

Finding the Fourth Proportional to 78,821.84, 118,130.08 and 32,020

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Solution

The fourth proportional to 78,821.84, 118,130.08 and 32,020 is: 47,988.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,821.84 : 118,130.08 = 32,020 : x
  2. Step 2: Convert to fraction form
    78,821.84/118,130.08 = 32,020/x
  3. Step 3: Cross multiply
    78,821.84x = 118,130.08 × 32,020
  4. Step 4: Simplify right side
    78,821.84x = 3,782,525,161.60
  5. Step 5: Solve for x
    x = 3,782,525,161.60/78,821.84
  6. Step 6: Final answer
    x = 47,988.29

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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.