Home / 78,048.56-117,001.08-28,116.45

Finding the Fourth Proportional to 78,048.56, 117,001.08 and 28,116.45

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Solution

The fourth proportional to 78,048.56, 117,001.08 and 28,116.45 is: 42,148.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,048.56 : 117,001.08 = 28,116.45 : x
  2. Step 2: Convert to fraction form
    78,048.56/117,001.08 = 28,116.45/x
  3. Step 3: Cross multiply
    78,048.56x = 117,001.08 × 28,116.45
  4. Step 4: Simplify right side
    78,048.56x = 3,289,654,360.47
  5. Step 5: Solve for x
    x = 3,289,654,360.47/78,048.56
  6. Step 6: Final answer
    x = 42,148.82

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1.5x scale

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.