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Finding the Fourth Proportional to 75,009.40, 103,513.01 and 42,743.10

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Solution

The fourth proportional to 75,009.40, 103,513.01 and 42,743.10 is: 58,985.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,009.40 : 103,513.01 = 42,743.10 : x
  2. Step 2: Convert to fraction form
    75,009.40/103,513.01 = 42,743.10/x
  3. Step 3: Cross multiply
    75,009.40x = 103,513.01 × 42,743.10
  4. Step 4: Simplify right side
    75,009.40x = 4,424,466,529.93
  5. Step 5: Solve for x
    x = 4,424,466,529.93/75,009.40
  6. Step 6: Final answer
    x = 58,985.50

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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.