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Finding the Fourth Proportional to 52,339.79, 72,247.70 and 31,119

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Solution

The fourth proportional to 52,339.79, 72,247.70 and 31,119 is: 42,955.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,339.79 : 72,247.70 = 31,119 : x
  2. Step 2: Convert to fraction form
    52,339.79/72,247.70 = 31,119/x
  3. Step 3: Cross multiply
    52,339.79x = 72,247.70 × 31,119
  4. Step 4: Simplify right side
    52,339.79x = 2,248,276,020.71
  5. Step 5: Solve for x
    x = 2,248,276,020.71/52,339.79
  6. Step 6: Final answer
    x = 42,955.39

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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.