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Finding the Fourth Proportional to 51,393.34, 77,043.18 and 19,783.18

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Solution

The fourth proportional to 51,393.34, 77,043.18 and 19,783.18 is: 29,656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,393.34 : 77,043.18 = 19,783.18 : x
  2. Step 2: Convert to fraction form
    51,393.34/77,043.18 = 19,783.18/x
  3. Step 3: Cross multiply
    51,393.34x = 77,043.18 × 19,783.18
  4. Step 4: Simplify right side
    51,393.34x = 1,524,159,097.71
  5. Step 5: Solve for x
    x = 1,524,159,097.71/51,393.34
  6. Step 6: Final answer
    x = 29,656.74

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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.