Home / 77,685.38-107,209.02-43,695.45

Finding the Fourth Proportional to 77,685.38, 107,209.02 and 43,695.45

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Solution

The fourth proportional to 77,685.38, 107,209.02 and 43,695.45 is: 60,301.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,685.38 : 107,209.02 = 43,695.45 : x
  2. Step 2: Convert to fraction form
    77,685.38/107,209.02 = 43,695.45/x
  3. Step 3: Cross multiply
    77,685.38x = 107,209.02 × 43,695.45
  4. Step 4: Simplify right side
    77,685.38x = 4,684,546,291.03
  5. Step 5: Solve for x
    x = 4,684,546,291.03/77,685.38
  6. Step 6: Final answer
    x = 60,301.52

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1.5x scale

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.