Home / 97,143.21-145,621.32-49,780.70

Finding the Fourth Proportional to 97,143.21, 145,621.32 and 49,780.70

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Solution

The fourth proportional to 97,143.21, 145,621.32 and 49,780.70 is: 74,623.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,143.21 : 145,621.32 = 49,780.70 : x
  2. Step 2: Convert to fraction form
    97,143.21/145,621.32 = 49,780.70/x
  3. Step 3: Cross multiply
    97,143.21x = 145,621.32 × 49,780.70
  4. Step 4: Simplify right side
    97,143.21x = 7,249,130,516.42
  5. Step 5: Solve for x
    x = 7,249,130,516.42/97,143.21
  6. Step 6: Final answer
    x = 74,623.13

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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.