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Finding the Fourth Proportional to 75,953.71, 113,920.05 and 19,789.24

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Solution

The fourth proportional to 75,953.71, 113,920.05 and 19,789.24 is: 29,681.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,953.71 : 113,920.05 = 19,789.24 : x
  2. Step 2: Convert to fraction form
    75,953.71/113,920.05 = 19,789.24/x
  3. Step 3: Cross multiply
    75,953.71x = 113,920.05 × 19,789.24
  4. Step 4: Simplify right side
    75,953.71x = 2,254,390,925.46
  5. Step 5: Solve for x
    x = 2,254,390,925.46/75,953.71
  6. Step 6: Final answer
    x = 29,681.12

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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.