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Finding the Fourth Proportional to 75,006.51, 103,505.34 and 42,748.68

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Solution

The fourth proportional to 75,006.51, 103,505.34 and 42,748.68 is: 58,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,006.51 : 103,505.34 = 42,748.68 : x
  2. Step 2: Convert to fraction form
    75,006.51/103,505.34 = 42,748.68/x
  3. Step 3: Cross multiply
    75,006.51x = 103,505.34 × 42,748.68
  4. Step 4: Simplify right side
    75,006.51x = 4,424,716,657.95
  5. Step 5: Solve for x
    x = 4,424,716,657.95/75,006.51
  6. Step 6: Final answer
    x = 58,991.10

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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.