Home / 52,931.10-79,427.70-21,356.40

Finding the Fourth Proportional to 52,931.10, 79,427.70 and 21,356.40

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Solution

The fourth proportional to 52,931.10, 79,427.70 and 21,356.40 is: 32,047.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,931.10 : 79,427.70 = 21,356.40 : x
  2. Step 2: Convert to fraction form
    52,931.10/79,427.70 = 21,356.40/x
  3. Step 3: Cross multiply
    52,931.10x = 79,427.70 × 21,356.40
  4. Step 4: Simplify right side
    52,931.10x = 1,696,289,732.28
  5. Step 5: Solve for x
    x = 1,696,289,732.28/52,931.10
  6. Step 6: Final answer
    x = 32,047.13

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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.