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Finding the Fourth Proportional to 74,424.70, 111,637.05 and 65,676.70

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Solution

The fourth proportional to 74,424.70, 111,637.05 and 65,676.70 is: 98,515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,424.70 : 111,637.05 = 65,676.70 : x
  2. Step 2: Convert to fraction form
    74,424.70/111,637.05 = 65,676.70/x
  3. Step 3: Cross multiply
    74,424.70x = 111,637.05 × 65,676.70
  4. Step 4: Simplify right side
    74,424.70x = 7,331,953,041.74
  5. Step 5: Solve for x
    x = 7,331,953,041.74/74,424.70
  6. Step 6: Final answer
    x = 98,515.05

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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.