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Finding the Fourth Proportional to 107,989.64, 162,030.54 and 52,570.76

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Solution

The fourth proportional to 107,989.64, 162,030.54 and 52,570.76 is: 78,878.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,989.64 : 162,030.54 = 52,570.76 : x
  2. Step 2: Convert to fraction form
    107,989.64/162,030.54 = 52,570.76/x
  3. Step 3: Cross multiply
    107,989.64x = 162,030.54 × 52,570.76
  4. Step 4: Simplify right side
    107,989.64x = 8,518,068,631.01
  5. Step 5: Solve for x
    x = 8,518,068,631.01/107,989.64
  6. Step 6: Final answer
    x = 78,878.57

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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.