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Finding the Fourth Proportional to 90,089.84, 124,339.44 and 52,386

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Solution

The fourth proportional to 90,089.84, 124,339.44 and 52,386 is: 72,301.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,089.84 : 124,339.44 = 52,386 : x
  2. Step 2: Convert to fraction form
    90,089.84/124,339.44 = 52,386/x
  3. Step 3: Cross multiply
    90,089.84x = 124,339.44 × 52,386
  4. Step 4: Simplify right side
    90,089.84x = 6,513,645,903.84
  5. Step 5: Solve for x
    x = 6,513,645,903.84/90,089.84
  6. Step 6: Final answer
    x = 72,301.67

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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.